104-436: A pelican is a bird of the family Pelecanidae . Pelican may also refer to: Pelican 8, see text Pelicans (genus Pelecanus ) are a genus of large water birds that make up the family Pelecanidae . They are characterized by a long beak and a large throat pouch used for catching prey and draining water from the scooped-up contents before swallowing. They have predominantly pale plumage, except for
208-542: A "disagreement" with Rudbeck's wife and had to move out of his mentor's house; his relationship with Rudbeck did not appear to suffer. That Christmas, Linnaeus returned home to Stenbrohult to visit his parents for the first time in about three years. His mother had disapproved of his failing to become a priest, but she was pleased to learn he was teaching at the University. During a visit with his parents, Linnaeus told them about his plan to travel to Lapland ; Rudbeck had made
312-479: A catalogue of the botanical holdings in the herbarium and botanical garden of Hartekamp. He wrote it in nine months (completed in July 1737), but it was not published until 1738. It contains the first use of the name Nepenthes , which Linnaeus used to describe a genus of pitcher plants . Linnaeus stayed with Clifford at Hartekamp until 18 October 1737 (new style), when he left the house to return to Sweden. Illness and
416-466: A child's talents than develop them". Two years after his tutoring had begun, he was sent to the Lower Grammar School at Växjö in 1717. Linnaeus rarely studied, often going to the countryside to look for plants. At some point, his father went to visit him and, after hearing critical assessments by his preceptors, he decided to put the youth as an apprentice to some honest cobbler. He reached
520-643: A collector of natural history, and to see his cabinet , as well as to visit the Chelsea Physic Garden and its keeper, Philip Miller . He taught Miller about his new system of subdividing plants, as described in Systema Naturae . At first, Miller was reluctant to use the new binomial nomenclature , preferring instead the classifications of Joseph Pitton de Tournefort and John Ray . Nevertheless, Linnaeus applauded Miller's Gardeners Dictionary . The conservative Miller actually retained in his dictionary
624-594: A complex communal courtship involving a group of males chasing a single female in the air, on land, or in the water while pointing, gaping, and thrusting their bills at each other. They can finish the process in a day. The tree-nesting species have a simpler process in which perched males advertise for females. The location of the breeding colony is constrained by the availability of an ample supply of fish to eat, although pelicans can use thermals to soar and commute for hundreds of kilometres daily to fetch food. The Australian pelican has two reproductive strategies depending on
728-430: A copy of Sir Hans Sloane's Natural History of Jamaica , a rare book, if he let Linnaeus stay with him, and Burman accepted. On 24 September 1735, Linnaeus moved to Hartekamp to become personal physician to Clifford, and curator of Clifford's herbarium. He was paid 1,000 florins a year, with free board and lodging. Though the agreement was only for a winter of that year, Linnaeus practically stayed there until 1738. It
832-555: A curriculum designed for boys preparing for the priesthood. In the last year at the gymnasium, Linnaeus's father visited to ask the professors how his son's studies were progressing; to his dismay, most said that the boy would never become a scholar. Rothman believed otherwise, suggesting Linnaeus could have a future in medicine. The doctor offered to have Linnaeus live with his family in Växjö and to teach him physiology and botany. Nils accepted this offer. Rothman showed Linnaeus that botany
936-560: A director of the Dutch East India Company and the owner of a rich botanical garden at the estate of Hartekamp in Heemstede . Clifford was very impressed with Linnaeus's ability to classify plants, and invited him to become his physician and superintendent of his garden. Linnaeus had already agreed to stay with Burman over the winter, and could thus not accept immediately. However, Clifford offered to compensate Burman by offering him
1040-529: A dissertation, written back in Sweden, entitled Dissertatio medica inauguralis in qua exhibetur hypothesis nova de febrium intermittentium causa , in which he laid out his hypothesis that malaria arose only in areas with clay-rich soils. Although he failed to identify the true source of disease transmission, (i.e., the Anopheles mosquito ), he did correctly predict that Artemisia annua ( wormwood ) would become
1144-456: A family, he received permission to marry his fiancée, Sara Elisabeth Moræa. Their wedding was held 26 June 1739. Seventeen months later, Sara gave birth to their first son, Carl . Two years later, a daughter, Elisabeth Christina , was born, and the subsequent year Sara gave birth to Sara Magdalena, who died when 15 days old. Sara and Linnaeus would later have four other children: Lovisa, Sara Christina, Johannes and Sophia. In May 1741, Linnaeus
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#17330857815641248-615: A fish eater, the Australian pelican is also an eclectic and opportunistic scavenger and carnivore that forages in landfill sites, as well as taking carrion and "anything from insects and small crustaceans to ducks and small dogs". Food is not stored in a pelican's throat pouch, contrary to popular folklore. Pelicans may also eat birds. In southern Africa, eggs and chicks of the Cape cormorant are an important food source for great white pelicans. Several other bird species have been recorded in
1352-579: A long history of cultural significance in mythology , and in Christian and heraldic iconography . The name comes from the Ancient Greek word pelekan (πελεκάν), which is itself derived from the word pelekys (πέλεκυς) meaning "axe". In classical times, the word was applied to both the pelican and the woodpecker. The genus Pelecanus was first formally described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae . He described
1456-476: A naturalist." Linnaeus has been called Princeps botanicorum (Prince of Botanists) and "The Pliny of the North". He is also considered one of the founders of modern ecology . In botany, the abbreviation L. is used to indicate Linnaeus as the authority for a species' name. In zoology, the abbreviation Linnaeus is generally used; the abbreviations L., Linnæus and Linné are also used. In older publications,
1560-472: A new benefactor, Olof Celsius , who was a professor of theology and an amateur botanist. He received Linnaeus into his home and allowed him use of his library, which was one of the richest botanical libraries in Sweden. In 1729, Linnaeus wrote a thesis, Praeludia Sponsaliorum Plantarum on plant sexual reproduction . This attracted the attention of Rudbeck; in May 1730, he selected Linnaeus to give lectures at
1664-564: A number of pre-Linnaean binomial signifiers discarded by Linnaeus but which have been retained by modern botanists. He only fully changed to the Linnaean system in the edition of The Gardeners Dictionary of 1768. Miller ultimately was impressed, and from then on started to arrange the garden according to Linnaeus's system. Linnaeus also travelled to Oxford University to visit the botanist Johann Jacob Dillenius . He failed to make Dillenius publicly fully accept his new classification system, though
1768-519: A phenomenon known as ground effect to reduce drag and increase lift . As the air flows between the wings and the water surface, it is compressed to a higher density and exerts a stronger upward force against the bird above. Hence, substantial energy is saved while flying. Adult pelicans rely on visual displays and behaviour to communicate, particularly using their wings and bills. Agonistic behaviour consists of thrusting and snapping at opponents with their bills, or lifting and waving their wings in
1872-611: A physician, and thus to make it possible to support a family. Once again, Linnaeus found a patron; he became acquainted with Count Carl Gustav Tessin , who helped him get work as a physician at the Admiralty. During this time in Stockholm, Linnaeus helped found the Royal Swedish Academy of Science ; he became the first Praeses of the academy by drawing of lots. Because his finances had improved and were now sufficient to support
1976-556: A practical way, making this the first proto-modern Flora . The account covered 534 species, used the Linnaean classification system and included, for the described species, geographical distribution and taxonomic notes. It was Augustin Pyramus de Candolle who attributed Linnaeus with Flora Lapponica as the first example in the botanical genre of Flora writing. Botanical historian E. L. Greene described Flora Lapponica as "the most classic and delightful" of Linnaeus's works. It
2080-487: A similar technique is the Peruvian pelican, but its dives are typically from a lower height than the brown pelican. The Australian and American white pelicans may feed by low plunge-dives landing feet-first and then scooping up the prey with the beak, but they—as well as the remaining pelican species—primarily feed while swimming on the water. Aquatic prey is most commonly taken at or near the water surface. Although principally
2184-566: A small group of students to Dalarna . Funded by the Governor of Dalarna, the expedition was to catalogue known natural resources and discover new ones, but also to gather intelligence on Norwegian mining activities at Røros . His relations with Nils Rosén having worsened, Linnaeus accepted an invitation from Claes Sohlberg, son of a mining inspector, to spend the Christmas holiday in Falun , where Linnaeus
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#17330857815642288-462: A source of antimalarial medications. Within two weeks he had completed his oral and practical examinations and was awarded a doctoral degree. That summer Linnaeus reunited with Peter Artedi , a friend from Uppsala with whom he had once made a pact that should either of the two predecease the other, the survivor would finish the decedent's work. Ten weeks later, Artedi drowned in the canals of Amsterdam , leaving behind an unfinished manuscript on
2392-452: A thesis along with Frederick Lindberg, a physician student, based on their experiences. In the tradition of the period, this dissertation was essentially an idea of the presiding reviewer ( prases ) expounded upon by the student. Linnaeus's dissertation was translated into French by J. E. Gilibert in 1770 as La Nourrice marâtre, ou Dissertation sur les suites funestes du nourrisage mercénaire . Linnaeus suggested that children might absorb
2496-420: A threatening manner. Adult pelicans grunt when at the colony, but are generally silent elsewhere or outside breeding season. Conversely, colonies are noisy, as chicks vocalise extensively. Pelicans are gregarious and nest colonially. Pairs are monogamous for a single season, but the pair bond extends only to the nesting area; mates are independent away from the nest. The ground-nesting (white) species have
2600-412: A valid description. Fossil finds from North America have been meagre compared with Europe, which has a richer fossil record. Several Pelecanus species have been described from fossil material, including: Pelicans are very large birds with very long bills characterised by a downcurved hook at the end of the upper mandible, and the attachment of a huge gular pouch to the lower. The slender rami of
2704-532: A varied taxonomic history. Tropicbirds , darters , cormorants, gannets, boobies, and frigatebirds, all traditional members of the order, have since been reclassified: tropicbirds into their own order, Phaethontiformes , and the remainder into the Suliformes. In their place, herons, ibises, spoonbills, the hamerkop, and the shoebill have now been transferred into the Pelecaniformes. Molecular evidence suggests that
2808-436: A week, they are able to put their heads into their parents' pouches and feed themselves. Sometimes before, but especially after being fed the pelican chick may seem to "throw a tantrum" by loudly vocalizing and dragging itself around in a circle by one wing and leg, striking its head on the ground or anything nearby and the tantrums sometimes end in what looks like a seizure that results in the chick falling briefly unconscious;
2912-461: A wingspan of as little as 1.83 m (6.0 ft). The largest is believed to be the Dalmatian, at up to 15 kg (33 lb) and 1.83 m (6.0 ft) in length, with a maximum wingspan of 3 m (9.8 ft). The Australian pelican's bill may grow up to 0.5 m (1.6 ft) long in large males, the longest of any bird. Pelicans have mainly light-coloured plumage, the exceptions being
3016-744: Is considered to be near threatened in the IUCN Red List of Threatened Species. Numbers declined substantially during the 20th century, one crucial factor being the eradication of the important Sittaung valley breeding colony in Burma through deforestation and the loss of feeding sites. The chief threats it faces are from habitat loss and human disturbance, but populations have mostly stabilised following increased protection in India and Cambodia. Carl Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné ,
3120-463: Is darker than that of adults. Newly hatched chicks are naked and pink, darkening to grey or black after 4 to 14 days, then developing a covering of white or grey down . Anatomical dissections of two brown pelicans in 1939 showed that pelicans have a network of air sacs under their skin situated across the ventral surface including the throat, breast, and undersides of the wings, as well as having air sacs in their bones. The air sacs are connected to
3224-541: Is highly variable. Pelicans live for 15 to 25 years in the wild, although one reached an age of 54 years in captivity. The diet of pelicans usually consists of fish, but occasionally amphibians , turtles, crustaceans , insects , birds, and mammals are also eaten. The size of the preferred prey fish varies depending on pelican species and location. For example, in Africa, the pink-backed pelican generally takes fish ranging in size from fry up to 400 g (0.9 lb) and
Pelican (disambiguation) - Misplaced Pages Continue
3328-819: Is known to migrate to the inland desert of Australia 's Red Centre , after heavy rains create temporary lakes. White pelicans are also observed at the American state of Utah 's Great Salt Lake , for example, some 600 miles (965 km) from the nearest coastline (the Pacific West Coast). They have also been seen hundreds of miles inland in North America, having flown northwards along the Mississippi River and other large waterways. Long thought to be related to frigatebirds , cormorants , tropicbirds , and gannets and boobies , pelicans instead are most closely related to
3432-423: Is the case today). Pelicans swim well with their strong legs and their webbed feet. They rub the backs of their heads on their preen glands to pick up an oily secretion, which they transfer to their plumage to waterproof it. Holding their wings only loosely against their bodies, pelicans float with relatively little of their bodies below the water surface. They dissipate excess heat by gular flutter – rippling
3536-446: The Beast of Revelation . Even at the risk of incurring the mayor's wrath, Linnaeus made his observations public, dashing the mayor's dreams of selling the hydra for an enormous sum. Linnaeus and Sohlberg were forced to flee from Hamburg. Linnaeus began working towards his degree as soon as he reached Harderwijk , a university known for awarding degrees in as little as a week. He submitted
3640-470: The Luberon in southeastern France, and is remarkably similar to modern forms. Its beak is almost complete and is morphologically identical to that of present-day pelicans, showing that this advanced feeding apparatus was already in existence at the time. An Early Miocene fossil has been named Miopelecanus gracilis on the basis of certain features originally considered unique, but later thought to lie within
3744-539: The Old World and spread into the Americas; this is reflected in the relationships within the genus as the eight species divide into Old World and New World lineages. This hypothesis is supported by fossil evidence from the oldest pelican taxa. Pelicans will frequent inland waterways but are most known for residing along maritime and coastal zones, where they feed principally on fish in their large throat pouches, diving into
3848-433: The brown and Peruvian pelicans . The bills, pouches, and bare facial skin of all pelicans become brightly coloured before the breeding season. The eight living pelican species have a patchy, seasonally-dependent yet global distribution, ranging latitudinally from the tropics to the temperate zone . Pelicans are absent from interior Amazonian South America, from polar regions and the open ocean; at least one species
3952-490: The curate of the small village of Stenbrohult in Småland. Christina was the daughter of the rector of Stenbrohult, Samuel Brodersonius. A year after Linnaeus's birth, his grandfather Samuel Brodersonius died, and his father Nils became the rector of Stenbrohult. The family moved into the rectory from the curate's house. Even in his early years, Linnaeus seemed to have a liking for plants, flowers in particular. Whenever he
4056-481: The shoebill and hamerkop storks (although these two birds are not actually true 'storks'), and are placed in the order Pelecaniformes . Ibises , spoonbills , herons , and bitterns have been classified in the same order. Fossil evidence of pelicans dates back at least 36 million years to the remains of a tibiotarsus recovered from late Eocene strata of Egypt that bears striking similarity to modern species of pelican. They are thought to have evolved in
4160-459: The Australian white pelican was their next-closest relative. The great white pelican also belonged to this lineage, but was the first to diverge from the common ancestor of the other four species. This finding suggests that pelicans evolved in the Old World and spread into the Americas, and that preference for tree- or ground-nesting is more related to size than genetics. The fossil record shows that
4264-567: The Scottish doctor Isaac Lawson , the manuscript was published as Systema Naturae (1735). Linnaeus became acquainted with one of the most respected physicians and botanists in the Netherlands, Herman Boerhaave , who tried to convince Linnaeus to make a career there. Boerhaave offered him a journey to South Africa and America, but Linnaeus declined, stating he would not stand the heat. Instead, Boerhaave convinced Linnaeus that he should visit
Pelican (disambiguation) - Misplaced Pages Continue
4368-547: The Swedish province of Västergötland . He set out from Uppsala on 12 June and returned on 11 August. On the expedition his primary companion was Erik Gustaf Lidbeck, a student who had accompanied him on his previous journey. Linnaeus described his findings from the expedition in the book Wästgöta-Resa , published the next year. After he returned from the journey, the Government decided Linnaeus should take on another expedition to
4472-490: The University although the young man was only a second-year student. His lectures were popular, and Linnaeus often addressed an audience of 300 people. In June, Linnaeus moved from Celsius's house to Rudbeck's to become the tutor of the three youngest of his 24 children. His friendship with Celsius did not wane and they continued their botanical expeditions. Over that winter, Linnaeus began to doubt Tournefort's system of classification and decided to create one of his own. His plan
4576-521: The abbreviation "Linn." is found. Linnaeus's remains constitute the type specimen for the species Homo sapiens following the International Code of Zoological Nomenclature , since the sole specimen that he is known to have examined was himself. Linnaeus was born in the village of Råshult in Småland , Sweden, on 23 May 1707. He was the first child of Nicolaus (Nils) Ingemarsson (who later adopted
4680-618: The abdomen, where surface protuberances may be caused by viscera changing size and position) to enable the overlying feathers to form more effective heat insulation and also to enable feathers to be held in position for good aerodynamics. Modern pelicans are found on all continents except Antarctica. They primarily inhabit warm regions, although breeding ranges extend to latitudes of 45° South (Australian pelicans in Tasmania ) and 60° North (American white pelicans in western Canada). Birds of inland and coastal waters, they are absent from polar regions,
4784-534: The age of 17, Linnaeus had become well acquainted with the existing botanical literature. He remarks in his journal that he "read day and night, knowing like the back of my hand, Arvidh Månsson's Rydaholm Book of Herbs, Tillandz's Flora Åboensis, Palmberg's Serta Florea Suecana, Bromelii's Chloros Gothica and Rudbeckii's Hortus Upsaliensis". Linnaeus entered the Växjö Katedralskola in 1724, where he studied mainly Greek , Hebrew , theology and mathematics ,
4888-432: The airways of the respiratory system, and the pelican can keep its air sacs inflated by closing its glottis , but how air sacs are inflated is not clear. The air sacs serve to keep the pelican remarkably buoyant in the water and may also cushion the impact of the pelican's body on the water surface when they dive from flight into water to catch fish. Superficial air sacs may also help to round body contours (especially over
4992-442: The botanist Johannes Burman . After his visit, Burman, impressed with his guest's knowledge, decided Linnaeus should stay with him during the winter. During his stay, Linnaeus helped Burman with his Thesaurus Zeylanicus . Burman also helped Linnaeus with the books on which he was working: Fundamenta Botanica and Bibliotheca Botanica . In August 1735, during Linnaeus's stay with Burman, he met George Clifford III ,
5096-522: The brown and Peruvian pelicans. The bills, pouches, and bare facial skin of all species become brighter before breeding season commences. The throat pouch of the Californian subspecies of the brown pelican turns bright red, and fades to yellow after the eggs are laid, while the throat pouch of the Peruvian pelican turns blue. The American white pelican grows a prominent knob on its bill that is shed once females have laid eggs. The plumage of immature pelicans
5200-424: The class of organisms. Linnaeus published Species Plantarum , the work which is now internationally accepted as the starting point of modern botanical nomenclature , in 1753. The first volume was issued on 24 May, the second volume followed on 16 August of the same year. The book contained 1,200 pages and was published in two volumes; it described over 7,300 species. The same year the king dubbed him knight of
5304-409: The classification of fish. One of the first scientists Linnaeus met in the Netherlands was Johan Frederik Gronovius , to whom Linnaeus showed one of the several manuscripts he had brought with him from Sweden. The manuscript described a new system for classifying plants. When Gronovius saw it, he was very impressed, and offered to help pay for the printing. With an additional monetary contribution by
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#17330857815645408-508: The deep ocean, oceanic islands (except the Galapagos), and inland South America, as well as from the eastern coast of South America from the mouth of the Amazon River southwards. Subfossil bones have been recovered from as far south as New Zealand's South Island , although their scarcity and isolated occurrence suggests that these remains may have merely been vagrants from Australia (much as
5512-620: The diet of this pelican in South Africa, including Cape gannet chicks on Malgas Island as well as crowned cormorants , kelp gulls , greater crested terns , and African penguins on Dassen Island and elsewhere. The Australian pelican, which is particularly willing to take a wide range of prey items, has been recorded feeding on young Australian white ibis , and young and adult grey teals and silver gulls . Brown pelicans have been reported preying on young common murres in California and
5616-459: The distinguishing characteristics as a straight bill hooked at the tip, linear nostrils, a bare face, and fully webbed feet. This early definition included frigatebirds, cormorants, and sulids , as well as pelicans. The family Pelecanidae was introduced (as Pelicanea) by the French polymath Constantine Samuel Rafinesque in 1815. Pelicans give their name to the Pelecaniformes, an order which has
5720-979: The eggs and nestlings of cattle egrets and nestling great egrets in Baja California , Mexico. Peruvian pelicans in Chile have been recorded feeding on nestlings of imperial shags , juvenile Peruvian diving petrels , and grey gulls . Cannibalism of chicks of their own species is known from the Australian, brown, and Peruvian pelicans. Non-native great white pelicans have been observed swallowing city pigeons in St. James's Park in London, England. Globally, pelican populations are adversely affected by these main factors: declining supplies of fish through overfishing or water pollution, destruction of habitat, direct effects of human activity such as disturbance at nesting colonies, hunting and culling, entanglement in fishing lines and hooks, and
5824-440: The expedition were later published in Öländska och Gothländska Resa , written in Swedish. Like Flora Lapponica , it contained both zoological and botanical observations, as well as observations concerning the culture in Öland and Gotland. During the summer of 1745, Linnaeus published two more books: Flora Suecica and Fauna Suecica . Flora Suecica was a strictly botanical book, while Fauna Suecica
5928-411: The family name Linnaeus) and Christina Brodersonia. His siblings were Anna Maria Linnæa, Sofia Juliana Linnæa, Samuel Linnæus (who would eventually succeed their father as rector of Stenbrohult and write a manual on beekeeping ), and Emerentia Linnæa. His father taught him Latin as a small child. One of a long line of peasants and priests, Nils was an amateur botanist , a Lutheran minister , and
6032-422: The first edition of his Systema Naturae in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect and classify animals, plants, and minerals, while publishing several volumes. By the time of his death in 1778, he
6136-544: The flora and fauna in the vicinity of Uppsala. Linnaeus published Philosophia Botanica in 1751. The book contained a complete survey of the taxonomy system he had been using in his earlier works. It also contained information of how to keep a journal on travels and how to maintain a botanical garden. During Linnaeus's time it was normal for upper class women to have wet nurses for their babies. Linnaeus joined an ongoing campaign to end this practice in Sweden and promote breast-feeding by mothers. In 1752 Linnaeus published
6240-457: The global population of the brown pelican at 300,000. Numbers of brown pelican plummeted in the 1950s and 1960s, largely as a consequence of environmental DDT pollution, and the species was listed as endangered in the US in 1970. With restrictions on DDT use in the US from 1972, its population has recovered, and it was delisted in 2009. The Peruvian pelican is listed as near threatened because, although
6344-448: The great white pelican prefers somewhat larger fish, up to 600 g (1.3 lb), but in Europe, the latter species has been recorded taking fish up to 1,850 g (4.1 lb). In deep water, white pelicans often fish alone. Nearer the shore, several encircle schools of small fish or form a line to drive them into the shallows, beating their wings on the water surface and then scooping up
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#17330857815646448-410: The gullet head-first. A gull will sometimes stand on the pelican's head, peck it to distraction, and grab a fish from the open bill. Pelicans in their turn sometimes snatch prey from other waterbirds. The brown pelican usually plunge-dives head-first for its prey, from a height as great as 10–20 m (33–66 ft), especially for anchovies and menhaden . The only other pelican to feed using
6552-877: The journey in 1695, but the detailed results of his exploration were lost in a fire seven years afterwards. Linnaeus's hope was to find new plants, animals and possibly valuable minerals. He was also curious about the customs of the native Sami people , reindeer-herding nomads who wandered Scandinavia's vast tundras. In April 1732, Linnaeus was awarded a grant from the Royal Society of Sciences in Uppsala for his journey. Linnaeus began his expedition from Uppsala on 12 May 1732, just before he turned 25. He travelled on foot and horse, bringing with him his journal, botanical and ornithological manuscripts and sheets of paper for pressing plants. Near Gävle he found great quantities of Campanula serpyllifolia , later known as Linnaea borealis ,
6656-577: The kindness of Dutch friends obliged him to stay some months longer in Holland. In May 1738, he set out for Sweden again. On the way home, he stayed in Paris for about a month, visiting botanists such as Antoine de Jussieu . After his return, Linnaeus never again left Sweden. When Linnaeus returned to Sweden on 28 June 1738, he went to Falun , where he entered into an engagement to Sara Elisabeth Moræa . Three months later, he moved to Stockholm to find employment as
6760-524: The last year of the Lower School when he was fifteen, which was taught by the headmaster, Daniel Lannerus, who was interested in botany. Lannerus noticed Linnaeus's interest in botany and gave him the run of his garden. He also introduced him to Johan Rothman, the state doctor of Småland and a teacher at Katedralskolan (a gymnasium ) in Växjö. Also a botanist, Rothman broadened Linnaeus's interest in botany and helped him develop an interest in medicine. By
6864-575: The local degree of environmental predictability. Colonies of tens or hundreds, rarely thousands, of birds breed regularly on small coastal and subcoastal islands where food is seasonally or permanently available. In arid inland Australia, especially in the endorheic Lake Eyre basin , pelicans breed opportunistically in very large numbers of up to 50,000 pairs, when irregular major floods, which may be many years apart, fill ephemeral salt lakes and provide large amounts of food for several months before drying out again. In all species, copulation takes place at
6968-404: The lower bill and the flexible tongue muscles form the pouch into a basket for catching fish, and sometimes rainwater, though to not hinder the swallowing of large fish, the tongue itself is tiny. They have a long neck and short stout legs with large, fully webbed feet. Although they are among the heaviest of flying birds, they are relatively light for their apparent bulk because of air pockets in
7072-429: The nest site; it begins shortly after pairing and continues for 3–10 days before egg-laying. The male brings the nesting material, in ground-nesting species (which may not build a nest) sometimes in the pouch, and in tree-nesting species crosswise in the bill. The female then heaps the material up to form a simple structure. The eggs are oval, white, and coarsely textured. All species normally lay at least two eggs;
7176-499: The others by placement in the subgenus Leptopelecanus but in fact species with both sorts of appearance and nesting behavior are found in either. DNA sequencing of both mitochondrial and nuclear genes yielded quite different relationships; the three New World pelicans formed one lineage, with the American white pelican sister to the two brown pelicans, and the five Old World species the other. The Dalmatian, pink-backed, and spot-billed were all closely related to one another, while
7280-599: The pelican lineage has existed for at least 36 million years; the oldest known pelican fossil was assigned to Eopelecanus aegyptiacus and was found in late Eocene (middle to late part of the early Priabonian stage/age) deposits of the Birket Qarun Formation within the Wadi Al-Hitan World Heritage Site in Egypt. A more complete fossil pelican of early Oligocene age is known from deposits at
7384-455: The personality of their wet nurse through the milk. He admired the child care practices of the Lapps and pointed out how healthy their babies were compared to those of Europeans who employed wet nurses. He compared the behaviour of wild animals and pointed out how none of them denied their newborns their breastmilk. It is thought that his activism played a role in his choice of the term Mammalia for
7488-586: The population is estimated by BirdLife International to exceed 500,000 mature individuals, and is possibly increasing, it has been much higher in the past. It declined dramatically during the 1998 El Niño event and could experience similar declines in the future. Conservation needs include regular monitoring throughout the range to determine population trends, particularly after El Niño years, restricting human access to important breeding colonies, and assessing interactions with fisheries. The spot-billed pelican has an estimated population between 13,000 and 18,000 and
7592-616: The presence of pollutants such as DDT and endrin . Most species' populations are more or less stable, although three are classified by the IUCN as being at risk. All species breed readily in zoos, which is potentially useful for conservation management. The combined population of brown and Peruvian pelicans is estimated at 650,000 birds, with around 250,000 in the United States and Caribbean, and 400,000 in Peru. The National Audubon Society estimates
7696-429: The prey. Although all pelican species may feed in groups or alone, the Dalmatian, pink-backed, and spot-billed pelicans are the only ones to prefer solitary feeding. When fishing in groups, all pelican species have been known to work together to catch their prey, and Dalmatian pelicans may even cooperate with great cormorants . Large fish are caught with the bill-tip, then tossed up in the air to be caught and slid into
7800-455: The quality of its ferruginous water. The journey was successful, and Linnaeus's observations were published the next year in Skånska Resa . In 1750, Linnaeus became rector of Uppsala University, starting a period where natural sciences were esteemed. Perhaps the most important contribution he made during his time at Uppsala was to teach; many of his students travelled to various places in
7904-473: The range of interspecific variation in Pelecanus . The Late Eocene Protopelicanus may be a pelecaniform or suliform – or a similar aquatic bird such as a pseudotooth ( Pelagornithidae ), but is not generally considered a pelecanid . The supposed Miocene pelican Liptornis from Patagonia is a nomen dubium (of doubtful validity), being based on fragments providing insufficient evidence to support
8008-735: The reason is not clearly known, but a common belief is that it is to draw attention to itself and away from any siblings who are waiting to be fed. Parents of ground-nesting species sometimes drag older young around roughly by the head before feeding them. From about 25 days old, the young of these species gather in "pods" or " crèches " of up to 100 birds in which parents recognise and feed only their own offspring. By 6–8 weeks they wander around, occasionally swimming, and may practise communal feeding. Young of all species fledge 10–12 weeks after hatching. They may remain with their parents afterwards, but are now seldom or never fed. They are mature at three or four years old. Overall breeding success
8112-1475: The shoebill and the hamerkop form a sister group to the pelicans, though some doubt exists as to the exact relationships among the three lineages. The oldest known record of Pelicans is a right tibiotarsus very similar to those of modern species from the Birket Qarun Formation in the Wadi El Hitan in Egypt, dating to the late Eocene ( Priabonian ), referred to the genus Eopelecanus . P. rufescens P. philippensis P. crispus P. conspicillatus P. onocrotalus P. occidentalis P. thagus P. erythrorhynchos Suliformes Herons (Ardeidae) Ibises and spoonbills (Threskiornithidae) Hamerkop ( Scopus umbretta ) Shoebill ( Balaeniceps rex ) Pelicans ( Pelecanus ) Cladogram based on Hackett et al. (2008). The eight living pelican species were traditionally divided into two groups, one containing four ground-nesters with mainly white adult plumage ( Australian , Dalmatian , great white , and American white pelicans ), and one containing four grey- or brown-plumaged species which nest preferentially either in trees ( pink-backed , spot-billed and brown pelicans ), or on sea rocks ( Peruvian pelican ). The largely marine brown and Peruvian pelicans, formerly considered conspecific , are sometimes separated from
8216-487: The skeleton and beneath the skin, enabling them to float high in the water. The tail is short and square. The wings are long and broad, suitably shaped for soaring and gliding flight, and have the unusually large number of 30 to 35 secondary flight feathers . Males are generally larger than females and have longer bills. The smallest species is the brown pelican, small individuals of which can be no more than 2.75 kg (6.1 lb) and 1.06 m (3.5 ft) long, with
8320-568: The skin of the throat and pouch with the bill open to promote evaporative cooling . They roost and loaf communally on beaches, sandbanks, and in shallow water. A fibrous layer deep in the breast muscles can hold the wings rigidly horizontal for gliding and soaring. Thus, they use thermals for soaring to heights of 3000 m (10,000 ft) or more, combined both with gliding and with flapping flight in V formation , to commute distances up to 150 km (93 mi) to feeding areas. Pelicans also fly low (or "skim") over stretches of water, using
8424-561: The southernmost province Scania . This journey was postponed, as Linnaeus felt too busy. In 1747, Linnaeus was given the title archiater , or chief physician, by the Swedish king Adolf Frederick —a mark of great respect. The same year he was elected member of the Academy of Sciences in Berlin . In the spring of 1749, Linnaeus could finally journey to Scania , again commissioned by the government. With him he brought his student Olof Söderberg. On
8528-744: The twinflower that would become his favourite. He sometimes dismounted on the way to examine a flower or rock and was particularly interested in mosses and lichens , the latter a main part of the diet of the reindeer , a common and economically important animal in Lapland. Linnaeus travelled clockwise around the coast of the Gulf of Bothnia , making major inland incursions from Umeå , Luleå and Tornio . He returned from his six-month-long, over 2,000 kilometres (1,200 mi) expedition in October, having gathered and observed many plants, birds and rocks. Although Lapland
8632-636: The two men remained in correspondence for many years afterwards. Linnaeus dedicated his Critica Botanica to him, as " opus botanicum quo absolutius mundus non-vidit ". Linnaeus would later name a genus of tropical tree Dillenia in his honour. He then returned to Hartekamp, bringing with him many specimens of rare plants. The next year, 1737, he published Genera Plantarum , in which he described 935 genera of plants, and shortly thereafter he supplemented it with Corollarium Generum Plantarum , with another sixty ( sexaginta ) genera. His work at Hartekamp led to another book, Hortus Cliffortianus ,
8736-469: The two professors who taught at the medical faculty at Uppsala: Olof Rudbeck the Younger and Lars Roberg . Although Rudbeck and Roberg had undoubtedly been good professors, by then they were older and not so interested in teaching. Rudbeck no longer gave public lectures, and had others stand in for him. The botany, zoology, pharmacology and anatomy lectures were not in their best state. In Uppsala, Linnaeus met
8840-455: The use of his library, which included many books about botany. He also gave the student free admission to his lectures. In his spare time, Linnaeus explored the flora of Skåne, together with students sharing the same interests. In August 1728, Linnaeus decided to attend Uppsala University on the advice of Rothman, who believed it would be a better choice if Linnaeus wanted to study both medicine and botany. Rothman based this recommendation on
8944-512: The usual clutch size is one to three, rarely up to six. Both sexes incubate with the eggs on top of or below the feet; they may display when changing shifts. Incubation takes 30–36 days; hatching success for undisturbed pairs can be as high as 95%, but because of sibling competition or siblicide , in the wild, usually all but one nestling dies within the first few weeks (later in the pink-backed and spot-billed species). Both parents feed their young. Small chicks are fed by regurgitation ; after about
9048-740: The water and catching them at/near the water's surface. They can adapt to varying degrees of water salinity , from freshwater and brackish to—most commonly—seawater. They are gregarious birds, travelling in flocks, hunting cooperatively , and breeding colonially . Four white-plumaged species tend to nest on the ground, and four brown or grey-plumaged species nest mainly in trees. The relationship between pelicans and people has often been contentious. The birds have been persecuted because of their perceived competition with commercial and recreational fishing. Their populations have fallen through habitat destruction , disturbance, and environmental pollution, and three species are of conservation concern. They also have
9152-539: The way to Scania, he made his last visit to his brothers and sisters in Stenbrohult since his father had died the previous year. The expedition was similar to the previous journeys in most aspects, but this time he was also ordered to find the best place to grow walnut and Swedish whitebeam trees; these trees were used by the military to make rifles. While there, they also visited the Ramlösa mineral spa , where he remarked on
9256-471: The way, the pair stopped in Hamburg , where they met the mayor, who proudly showed them a supposed wonder of nature in his possession: the taxidermied remains of a seven-headed hydra . Linnaeus quickly discovered the specimen was a fake , cobbled together from the jaws and paws of weasels and the skins of snakes. The provenance of the hydra suggested to Linnaeus that it had been manufactured by monks to represent
9360-477: The world to collect botanical samples. Linnaeus called the best of these students his "apostles". His lectures were normally very popular and were often held in the Botanical Garden. He tried to teach the students to think for themselves and not trust anybody, not even him. Even more popular than the lectures were the botanical excursions made every Saturday during summer, where Linnaeus and his students explored
9464-528: The æ ligature, both in handwritten documents and in publications. Carl's patronymic would have been Nilsson, as in Carl Nilsson Linnæus. Linnaeus's father began teaching him basic Latin, religion, and geography at an early age. When Linnaeus was seven, Nils decided to hire a tutor for him. The parents picked Johan Telander, a son of a local yeoman . Linnaeus did not like him, writing in his autobiography that Telander "was better calculated to extinguish
9568-433: Was zoological . Anders Celsius had created the temperature scale named after him in 1742. Celsius's scale was originally inverted compared to the way it is used today, with water boiling at 0 °C and freezing at 100 °C. Linnaeus was the one who inverted the scale to its present usage, in 1745. In the summer of 1746, Linnaeus was once again commissioned by the Government to carry out an expedition, this time to
9672-730: Was a Swedish biologist and physician who formalised binomial nomenclature , the modern system of naming organisms. He is known as the "father of modern taxonomy ". Many of his writings were in Latin; his name is rendered in Latin as Carolus Linnæus and, after his 1761 ennoblement , as Carolus a Linné . Linnaeus was the son of a curate and was born in Råshult , in the countryside of Småland , southern Sweden . He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published
9776-413: Was a region with limited biodiversity , Linnaeus described about 100 previously unidentified plants. These became the basis of his book Flora Lapponica . However, on the expedition to Lapland, Linnaeus used Latin names to describe organisms because he had not yet developed the binomial system. In Flora Lapponica Linnaeus's ideas about nomenclature and classification were first used in
9880-629: Was a serious subject. He taught Linnaeus to classify plants according to Tournefort's system. Linnaeus was also taught about the sexual reproduction of plants, according to Sébastien Vaillant . In 1727, Linnaeus, age 21, enrolled in Lund University in Skåne . He was registered as Carolus Linnæus , the Latin form of his full name, which he also used later for his Latin publications. Professor Kilian Stobæus , natural scientist, physician and historian, offered Linnaeus tutoring and lodging, as well as
9984-441: Was appointed Professor of Medicine at Uppsala University, first with responsibility for medicine-related matters. Soon, he changed place with the other Professor of Medicine, Nils Rosén, and thus was responsible for the Botanical Garden (which he would thoroughly reconstruct and expand), botany and natural history , instead. In October that same year, his wife and nine-month-old son followed him to live in Uppsala. Ten days after he
10088-482: Was appointed professor, he undertook an expedition to the island provinces of Öland and Gotland with six students from the university to look for plants useful in medicine. They stayed on Öland until 21 June, then sailed to Visby in Gotland. Linnaeus and the students stayed on Gotland for about a month, and then returned to Uppsala. During this expedition, they found 100 previously unrecorded plants. The observations from
10192-448: Was during this expedition that Linnaeus had a flash of insight regarding the classification of mammals. Upon observing the lower jawbone of a horse at the side of a road he was travelling, Linnaeus remarked: "If I only knew how many teeth and of what kind every animal had, how many teats and where they were placed, I should perhaps be able to work out a perfectly natural system for the arrangement of all quadrupeds." In 1734, Linnaeus led
10296-563: Was here that he wrote a book Hortus Cliffortianus , in the preface of which he described his experience as "the happiest time of my life". (A portion of Hartekamp was declared as public garden in April 1956 by the Heemstede local authority, and was named "Linnaeushof". It eventually became, as it is claimed, the biggest playground in Europe. ) In July 1736, Linnaeus travelled to England, at Clifford's expense. He went to London to visit Sir Hans Sloane,
10400-547: Was named Ingemarsson after his father Ingemar Bengtsson. When Nils was admitted to the University of Lund , he had to take on a family name. He adopted the Latinate name Linnæus after a giant linden tree (or lime tree), lind in Swedish, that grew on the family homestead. This name was spelled with the æ ligature . When Carl was born, he was named Carl Linnæus, with his father's family name. The son also always spelled it with
10504-420: Was one of the most acclaimed scientists in Europe. Philosopher Jean-Jacques Rousseau sent him the message: "Tell him I know no greater man on Earth." Johann Wolfgang von Goethe wrote: "With the exception of Shakespeare and Spinoza , I know no one among the no longer living who has influenced me more strongly." Swedish author August Strindberg wrote: "Linnaeus was in reality a poet who happened to become
10608-538: Was permitted to visit the mines. In April 1735, at the suggestion of Sohlberg's father, Linnaeus and Sohlberg set out for the Dutch Republic , where Linnaeus intended to study medicine at the University of Harderwijk while tutoring Sohlberg in exchange for an annual salary. At the time, it was common for Swedes to pursue doctoral degrees in the Netherlands , then a highly revered place to study natural history. On
10712-738: Was to divide the plants by the number of stamens and pistils . He began writing several books, which would later result in, for example, Genera Plantarum and Critica Botanica . He also produced a book on the plants grown in the Uppsala Botanical Garden , Adonis Uplandicus . Rudbeck's former assistant, Nils Rosén , returned to the University in March 1731 with a degree in medicine. Rosén started giving anatomy lectures and tried to take over Linnaeus's botany lectures, but Rudbeck prevented that. Until December, Rosén gave Linnaeus private tutoring in medicine. In December, Linnaeus had
10816-414: Was upset, he was given a flower, which immediately calmed him. Nils spent much time in his garden and often showed flowers to Linnaeus and told him their names. Soon Linnaeus was given his own patch of earth where he could grow plants. Carl's father was the first in his ancestry to adopt a permanent surname. Before that, ancestors had used the patronymic naming system of Scandinavian countries: his father
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