81-513: The little eagle ( Hieraaetus morphnoides ) is a very small eagle endemic to Australia . John Gould described the little eagle in 1841. The distinctive pygmy eagle has long been considered a subspecies, but a 2009 genetic study shows it to be distinctive genetically and warrants species status. It is a near relative of both the Palearctic booted eagle and the massive but now extinct Haast's eagle of New Zealand . The little eagle
162-436: A 6.8 kg (15 lb) mule deer fawn. However, a few eagles may target prey considerably heavier than themselves; such prey is too heavy to fly with, thus it is either eaten at the site of the kill or taken in pieces back to a perch or nest. Golden and crowned eagles have killed ungulates weighing up to 30 kg (66 lb) and a martial eagle even killed a 37 kg (82 lb) duiker , 7–8 times heavier than
243-491: A broad diet , which seems to be determined primarily by the availability of prey of a suitable size. The little eagle would originally feed on small birds , mammals and reptiles and supplement its diet with large insects on occasion, however with the introduction of rabbits and foxes the little eagle's diet changed. Rabbits became widely abundant very quickly after being introduced, competing for habitat with native mammals. The introduction of foxes can also be attributed to
324-455: A close genetic relationship with Haliastur and Milvus ; the whole group is only distantly related to the Buteo group. Fish eagles exist in every continent throughout the world, except for South America. Although fish eagles can be found in many different places around the world, they have been classified as "Near Threatened". Reasons such as overfishing, pollution, habitat destruction, and
405-405: A forceful symbol in national identity and imagery is demonstrated by its widespread usage. Riparian A riparian zone or riparian area is the interface between land and a river or stream . In some regions, the terms riparian woodland , riparian forest , riparian buffer zone , riparian corridor , and riparian strip are used to characterize a riparian zone. The word riparian
486-443: A large population of juvenile eagles, mature eagles constitute roughly less than three-quarters of the population. Little eagle nesting territories are defended against intruders and advertised by soaring, undulating flight display, conspicuous perching and/or calling. Movement behaviour varies between individuals, and may be partly migratory (being an altitudinal migrant), dispersive or permanently resident. They tend to slip away at
567-473: A large part of their diets, either fresh or as carrion. Proposed subfamily Haliaeetinae. Genera: Haliaeetus , Icthyophaga . Some authors include Gypohierax angolensis , the "vulturine fish eagle" (also called the palm-nut vulture ) in this group. However, genetic analyses indicate it is related to a grouping of Neophron – Gypaetus – Eutriorchis ( Egyptian vulture , bearded vulture (lammergeier), and Madagascar serpent eagle ). The fish eagles have
648-531: A riverbank, taking valuable grasses and soils downstream, and later allowing the sun to bake the land dry. Riparian zones can be restored through relocation (of human-made products), rehabilitation, and time. Natural Sequence Farming techniques have been used in the Upper Hunter Valley of New South Wales , Australia, in an attempt to rapidly restore eroded farms to optimum productivity. The Natural Sequence Farming technique involves placing obstacles in
729-415: A role in lowering nitrate contamination in surface runoff, such as manure and other fertilizers from agricultural fields , that would otherwise damage ecosystems and human health. Particularly, the attenuation of nitrate or denitrification of the nitrates from fertilizer in this buffer zone is important. The use of wetland riparian zones shows a particularly high rate of removal of nitrate entering
810-427: A setback zone. "Riparian zones play a crucial role in preserving the vitality of streams and rivers, especially when faced with challenges stemming from catchment land use, including agricultural and urban development. These changes in land utilization can exert adverse impacts on the health of streams and rivers and, consequently, contribute to a decline in their reproductive rates." The protection of riparian zones
891-523: A social aspect, riparian zones contribute to nearby property values through amenity and views, and they improve enjoyment for footpaths and bikeways through supporting foreshoreway networks. Space is created for riparian sports such as fishing, swimming, and launching for vessels and paddle craft. The riparian zone acts as a sacrificial erosion buffer to absorb impacts of factors including climate change , increased runoff from urbanization , and increased boat wake without damaging structures located behind
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#1733085597772972-503: A stream and thus has a place in agricultural management. Also in terms of carbon transport from terrestrial ecosystems to aquatic ecosystems, riparian groundwater can play an important role. As such, a distinction can be made between parts of the riparian zone that connect large parts of the landscape to streams, and riparian areas with more local groundwater contributions. - Riparian forests are primarily situated alongside rivers or streams, with varying degrees of proximity to
1053-600: Is a medium-sized bird of prey, measuring 45–55 cm (17–21.5 inches) in length and weighing 815 g (1.8 lb), roughly the size of a peregrine falcon . It has fully feathered legs and a square-cut, barred tail. Wingspan is about 120 cm with males having longer wings in proportion to their bodies, but being nearly half the weight of females. It is a powerful bird and during flight has strong wing beats, glides on flat wings and soars on slightly raised or flat wings. The little eagle occurs in light and dark colour forms and generally these colours change with age. The most common
1134-688: Is after all a two-edged sword. All hawks seem to have this habit, from the smallest kestrel to the largest Ferruginous – but not the Eagles. Among the eagles are some of the largest birds of prey: only the condors and some of the Old World vultures are markedly larger. It is regularly debated which should be considered the largest species of eagle. They could be measured variously in total length, body mass, or wingspan. Different lifestyle needs among various eagles result in variable measurements from species to species. For example, many forest-dwelling eagles, including
1215-598: Is also often used in Christian iconography to represent the Gospel of John , and eagle-shaped lecterns are common in Anglican and some Roman Catholic churches . The eagle was believed to be able to look directly into the sun in the same way that the Gospel of John looks directly at Jesus' divinity, and the great distances the eagle flies represent the spread of the gospel to the ends of
1296-421: Is borrowed into English from Anglo-Norman : eagle and Middle French : aigle , both derived ultimately from Latin : aquila ("eagle"). It is cognate with terms such as French : aigle , Portuguese : águia and Spanish : águila . It is broadly synonymous with the less common English term "erne" or "earn", deriving from Middle English : ern , from Old English : earn , in which it acts as
1377-525: Is derived from Latin ripa , meaning " river bank ". Riparian is also the proper nomenclature for one of the terrestrial biomes of the Earth . Plant habitats and communities along the river margins and banks are called riparian vegetation, characterized by hydrophilic plants . Riparian zones are important in ecology , environmental resource management , and civil engineering because of their role in soil conservation , their habitat biodiversity , and
1458-408: Is important to maintaining geomorphology . Riparian zones also act as important buffers against nutrient loss in the wake of natural disasters, such as hurricanes. Many of the characteristics of riparian zones that reduce the inputs of nitrogen from agricultural runoff also retain the necessary nitrogen in the ecosystem after hurricanes threaten to dilute and wash away critical nutrients. From
1539-417: Is most commonly used for the golden eagle or sea-eagle. Eagles are large, powerfully-built birds of prey , with heavy heads and beaks. Even the smallest eagles, such as the booted eagle ( Hieraaetus pennatus ), which is comparable in size to a common buzzard ( Buteo buteo ) or red-tailed hawk ( B. jamaicensis ), have relatively longer and more evenly broad wings, and more direct, faster flight, despite
1620-459: Is often a consideration in logging operations. The undisturbed soil, soil cover, and vegetation provide shade, plant litter, and woody material and reduce the delivery of soil eroded from the harvested area. Factors such as soil types and root structures, climatic conditions, and vegetative cover determine the effectiveness of riparian buffering. Activities associated with logging, such as sediment input, introduction or removal of species, and
1701-445: Is the light form which is dark brown occurring on the back and wings with black streaks on the head and neck, and a sandy to pale under body. The dark form of this eagle is similar except the head and under body is usually darker brown or rich rufous. The sexes are similar with females being larger and typically darker. Juveniles are similar to adults but tend to be more strongly rufous in colour with less contrast in patterns. Although
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#17330855977721782-401: Is typically heavier than that of most other birds of prey. Eagles' eyes are extremely powerful. It is estimated that the wedge-tailed eagle has a visual acuity twice that of a typical human. This acuity enables eagles to spot potential prey from a very long distance. This keen eyesight is primarily attributed to their extremely large pupils which ensure minimal diffraction (scattering) of
1863-741: The Holy Roman Empire . The eagle of the Holy Roman Empire was two-headed, supposedly representing the two divisions, East and West , of the old Roman Empire. This motif, derived from the Byzantine (Eastern Roman) Empire was also adopted by the Russian Empire and is still featured in the Flag of Albania . The Roman eagle was preceded by the eagle of Ptolemaic Egypt and the Achaemenid Empire . In
1944-429: The buteonine black-chested buzzard-eagle of South America, may assume the position of top raptorial predator in open areas. Many other eagles, including the species-rich genus Spizaetus , live predominantly in woodlands and forests. These eagles often target various arboreal or ground-dwelling mammals and birds, which are often unsuspectingly ambushed in such dense, knotty environments. Hunting techniques differ among
2025-536: The nest typically placed in a mature, living tree. The birds build a stick nest lined with leaves and may use different nests in successive years, including those of other birds such as crows . A pair of little eagles will only reproduce once a year and each pair will only produce one or two eggs per season, usually laid in late August to early September. After an incubation period of about 37 days, one or two young are fledged after approximately eight weeks. Maturity in terms of breeding takes two to three years, leaving
2106-673: The Ibadan region of Oyo state. Ibadan, one of the oldest towns in Africa, covers a total area of 3,080 square kilometers and is characterized by a network of perennial water streams that create these valuable riparian zones. In the research conducted by Adeoye et al. (2012) on land use changes in Southwestern Nigeria, it was observed that 46.18 square kilometers of the area are occupied by water bodies. Additionally, most streams and rivers in this region are accompanied by riparian forests. Nevertheless,
2187-472: The Iberian Peninsula. Booted eagles or "true eagles" have feathered tarsi (lower legs). Tribe Aquililae or proposed subfamily Aquilinae. Genera: Aquila , Hieraaetus ; Spizaetus , Oroaetus , Spizastur ; Nisaetus ; Ictinaetus , Lophoaetus ; Polemaetus ; and Stephanoaetus . See comments under eagle species for changes to the composition of these genera. Most snake or serpent eagles, as
2268-465: The Vulnerable species listing. The reasons for this listing is the reduction of habitat quality or diversity and genetic diversity . The main threats to the species are the destruction and degradation of its foraging and breeding habitat causing it to come into competition with the larger and more dominant wedge-tailed eagle. The wedge-tailed eagle is not necessarily a predator of the little eagle but
2349-615: The area adjacent to a watercourse has standing water or saturated soil for as long as a season, it is normally termed a wetland because of its hydric soil characteristics. Because of their prominent role in supporting a diversity of species , riparian zones are often the subject of national protection in a biodiversity action plan . These are also known as a "plant or vegetation waste buffer". Research shows that riparian zones are instrumental in water quality improvement for both surface runoff and water flowing into streams through subsurface or groundwater flow. Riparian zones can play
2430-566: The arid zone is mostly lizards , and in Southern Australia has a high proportion of juvenile rabbits. In the ACT region its diet comprises mostly rabbits and to a lesser extent birds (especially rosellas, magpie-larks and starlings). There is some evidence of prey partitioning between little eagles and the sympatric, larger wedge-tailed eagle ( Aquila audax ), with the latter tending to take larger prey and to eat more carrion. However, rabbits are
2511-436: The bird exhibits generalist feeding behavior, which means it does not hunt down specific types of snakes but rather feeds on them depending on their availability in the wild. Harpy eagles or "giant forest eagles" are large eagles that inhabit tropical forests. The group contains two to six species, depending on the author. Although these birds occupy similar niches and have traditionally been grouped, they are not all related:
Little eagle - Misplaced Pages Continue
2592-520: The bird is derived from Latin : aquila by way of French : aigle . The origin of aquila is unknown, but it is believed to possibly derive from aquilus (meaning dark-colored, swarthy, or blackish) as a reference to the plumage of eagles. Old English used the term earn , related to Scandinavia's ørn / örn . It is similar to other Indo-European terms for "bird" or "eagle", including Greek : ὄρνις ( ornís ), Russian : орёл ( orël ), and Welsh : eryr . In
2673-468: The bird of prey has a huge range, spanning up to 20,000km2 and the population size is only decreasing at a rate of 10% per ten years or 3 generations, instead of the required 30%. The Red List amended the status of the little eagle from "Not Recognized" in 2006 to "Least Concern". Also, the NSW Scientific Committee has made the determination to list the little eagle as a Vulnerable species under
2754-455: The coat of arms of Kotka , Finland, the eagle is depicted carrying an anchor and the caduceus on its feet. Heraldic eagles are most often found displayed , i.e. with their wings and legs extended. They can also occur close , i.e. with their wings folded, or rising , i.e. about to take flight. The heads, wings, and legs of eagles can also be found independently. Eagles symbolize strength, courage, and independence and are commonly found in
2835-480: The decline in reporting rate has been 39%, and over the past 30 years has been 50%, with an accelerating trend since the 1990s. The decline in reporting rate over the past 20 years for the South Eastern Highlands bioregion has been greater than 20%. This bioregion includes the ACT. The little eagle was once common in the ACT, but has undergone significant decline (greater than 70%) over the last 20 years. In
2916-461: The decline of the little eagle's main source of prey. The rabbit however is an ideal source of prey also, and so the rabbit population became the little eagle's main diet until the release of the calicivirus which decreased the rabbit population from between 65 and 85% in arid and semi-arid areas. Their diet varies geographically; the diet in Northern Australia has a high proportion of birds, in
2997-602: The eagle Zeus bearing Ganymede aloft, from Classical times up to the present (see illustrations in the Ganymede (mythology) page.) Eagles appear metaphorically in many translations of the Old Testament . God is spoken of as carrying Israel on "eagles' wings" in Exodus 19:4, Isaiah 40:31 compares those who wait on the Lord to flying eagles, and Psalm 103 mentions renewing one's youth "as
3078-605: The eagle and often depicted eagles in their art. The golden eagle was sacred to the Aztec god Huitzilopochtli while the harpy eagle was sacred to Quetzalcoatl . Eagles are an exceptionally common symbol in heraldry, being considered the "King of Birds" in contrast to the lion , the "King of Beasts". Whereas the lion (e.g. England) usually represents authority, the eagle is the symbol of power. They are particularly popular in Germanic countries such as Austria, due to their association with
3159-457: The eagle was able to look directly at the sun, and that they forced their fledglings to do the same. Those that blinked would be cast from the nest. This belief persisted until the Medieval era . The eagle is the patron animal of the ancient Greek god Zeus . In particular, Zeus was said to have taken the form of an eagle in order to abduct Ganymede , and there are numerous artistic depictions of
3240-566: The eagle". In explaining this rejuvenation, Augustine of Hippo says in his commentary on the Psalms that eagles' beaks overgrow as they age and that they break them against rocks to restore them. The translation, however, is uncertain: the word in the Hebrew, נשר , can also be translated vulture , and is listed alongside specific kinds of vulture in Leviticus ' discussion of unclean animals . The eagle
3321-454: The earth. The United States eagle feather law stipulates that only individuals of certifiable Native American ancestry enrolled in a federally recognized tribe are legally authorized to obtain eagle feathers for religious or spiritual reasons. In Canada, the poaching of eagle feathers for the booming U.S. market has sometimes resulted in the arrests of First Nations person for the crime. The Moche people of ancient Peru worshiped
Little eagle - Misplaced Pages Continue
3402-784: The extraction of water for irrigation purposes have led to diminished water flows and changes in the riparian environment. Herbaceous Perennial : Herbaceous Perennial : In western North America and the Pacific coast, the riparian vegetation includes: Riparian trees Riparian shrubs Other plants In Asia there are different types of riparian vegetation, but the interactions between hydrology and ecology are similar as occurs in other geographic areas. Typical riparian vegetation in temperate New South Wales, Australia include: Typical riparian zone trees in Central Europe include: Land clearing followed by floods can quickly erode
3483-572: The figures listed are the median reported for each measurement in the guide Raptors of the World in which only measurements that could be personally verified by the authors were listed. The eagles are generally distributed in all types of habitats and nearly all parts of the world. The birds can be found in northern tundra to tropical rainforests and deserts. In North America, bald eagles and golden eagles are very common. Eagles are often informally divided into four groups. The snake eagles are placed in
3564-458: The first sign of human intrusion. Little eagles hunt live prey and occasionally take carrion . The eagles search for prey by soaring, up to 500 m (1,600 ft) altitude, or by using an elevated exposed perch. The species is an agile, fast hunter swooping to take prey on the ground in the open but also from trees and shrubs. Recorded prey species (from feeding observations, nest remains and faecal pellets) show considerable variation indicating
3645-468: The fish that live within rivers, such as brook and charr. Impacts on riparian zones can affect fish, and restoration is not always sufficient to recover fish populations. They provide native landscape irrigation by extending seasonal or perennial flows of water. Nutrients from terrestrial vegetation (e.g. plant litter and insect drop) are transferred to aquatic food webs, and are a vital source of energy in aquatic food webs. The vegetation surrounding
3726-597: The flow of water, which reduces soil erosion and flood damage. Sediment is trapped, reducing suspended solids to create less turbid water, replenish soils, and build stream banks. Pollutants are filtered from surface runoff, enhancing water quality via biofiltration. The riparian zones also provide wildlife habitat , increased biodiversity, and wildlife corridors , enabling aquatic and riparian organisms to move along river systems avoiding isolated communities. Riparian vegetation can also provide forage for wildlife and livestock. Riparian zones are also important for
3807-566: The genus Aquila . Most of the 68 species of eagles are from Eurasia and Africa . Outside this area, just 14 species can be found—two in North America , nine in Central and South America , and three in Australia . Eagles are not a natural group but denote essentially any kind of bird of prey large enough to hunt sizeable (about 50 cm long or more overall) vertebrates . The word "eagle"
3888-493: The heraldry of many nations across the world. Albania, Andorra, Armenia, Austria, Dagestan, Egypt, Germany, Ghana, Iraq, Jordan, Kazakhstan, Mexico, Montenegro, Nigeria, Philippines, Poland, Palestine, Panama, Russia, Romania, Serbia, South Sudan, Somaliland, the United States of America, Yemen, Zambia, and Zimbabwe are the nations whose coats of arms feature an eagle. The eagle's continuing significance and worldwide appeal as
3969-406: The incoming light. Like most diurnal raptors, eagles have little ability to see ultraviolet light. The female of all known species of eagles is larger than the male. Eagles normally build their nests, called eyries , in tall trees or on high cliffs. Many species lay two eggs, but the older, larger chick frequently kills its younger sibling once it has hatched. The parents take no action to stop
4050-725: The influence they have on terrestrial and semiaquatic fauna as well as aquatic ecosystems , including grasslands , woodlands , wetlands , and even non-vegetative areas. Riparian zones may be natural or engineered for soil stabilization or restoration . These zones are important natural biofilters , protecting aquatic environments from excessive sedimentation , polluted surface runoff , and erosion . They supply shelter and food for many aquatic animals and shade that limits stream temperature change. When riparian zones are damaged by construction , agriculture or silviculture , biological restoration can take place, usually by human intervention in erosion control and revegetation. If
4131-464: The input of polluted water all degrade riparian zones. The assortment of riparian zone trees varies from those of wetlands and typically consists of plants that are either emergent aquatic plants, or herbs , trees and shrubs that thrive in proximity to water. In South Africa's fynbos biome, Riparian ecosystem are heavily invaded by alien woody plants . Riparian plant communities along lowland streams exhibit remarkable species diversity, driven by
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#17330855977724212-415: The killing. It is said that eagles fly above clouds but this is not true. Eagles fly during storms and glide from the wind's pressure. This saves the bird's energy. Due to the size and power of many eagle species, they are ranked at the top of the food chain as apex predators in the avian world. The type of prey varies by genus. The Haliaeetus and Icthyophaga eagles prefer to capture fish, though
4293-519: The land from drying. The weeds will improve the streambeds so that trees and grasses can return, and later ideally replace the weeds. There are several other techniques used by government and non-government agencies to address riparian and streambed degradation, ranging from the installation of bed control structures such as log sills to the use of pin groynes or rock emplacement. Other possible approaches include control of invasive species, monitoring of herbivore activity, and cessation of human activity in
4374-681: The late 1980s there was an estimated 13 breeding pairs in the ACT, occurring mainly in the northern half of the ACT with the highest concentrations found in the Murrumbidgee and the Molonglo river corridors. By 2005 the only breeding record in the ACT was of an unsuccessful nest near Uriarra Crossing. A more intensive ACT survey in 2007 found three breeding pairs, which fledged a total of four young. In 2008 four breeding pairs were recorded and four young were fledged. In 2009, three breeding pairs were recorded with three young being fledged. Typical habitat for
4455-472: The little eagle has a large range and can be found in most parts of Australia , except heavily forested parts of the Great Dividing Range. It tends to inhabit open woodland , grassland and arid regions , shunning dense forest . Like so many Australian natives, it faces a deteriorating population due to a loss of habitat and competition from other species. One of the biggest factors to the decline of
4536-541: The little eagle includes woodland or open forest. Higher abundance of the species is associated with hillsides where there is a mixture of wooded and open areas such as riparian woodlands, forest margins and wooded farmland. Little eagles usually avoid large areas of dense forest, preferring to hunt in open woodland, where the birds use trees for lookouts. In the ACT, little eagles inhabit frequent open woodland and riparian areas. Little eagles nest in open woodland (usually on hillsides) and along tree-lined watercourses, with
4617-581: The little eagle is the decline of rabbits due to the release of the calicivirus, the eagle relied heavily on the rabbit population due to the extinction and massive decline of native terrestrial mammals of rabbit size or smaller such as large rodents , bandicoots , bettongs , juvenile banded hare-wallaby and other wallabies. In the first national bird atlas in 1977–81, the little eagle was reported in 65% of one degree grid cells across Australia, with mostly high reporting rates (more than 40% of surveys per grid) across New South Wales and Victoria . Breeding
4698-486: The most common dietary item for both eagle species near Canberra , indicating potential for competition for prey. Both species also eat carrion and it is possible that the more numerous wedge-tailed eagles in the Australian Capital Territory (ACT) region keep little eagles away from macropod carcasses , and that little eagles would eat more carrion if not excluded by wedge-tailed eagles. The little eagle
4779-459: The name suggests, primarily prey on snakes. Despite filling the niche of a snake eagle, genetic studies suggest that the Madagascar serpent eagle ( Eutriorchis ) is not related to them. Over several decades, a great deal of research has been done on the Snake-eagle's diet, which is mainly made up of reptiles, especially snakes. When it comes to catching snakes, it is generally accepted that
4860-571: The presence of water bodies. - The vegetation in riparian forests exhibits a multi-layered structure. - Moisture-dependent trees are the dominant feature, giving these forests a unique appearance, especially in savanna regions. - These moisture-dependent trees define the landscape, accompanied by a variety of mesic understorey , shrub, and ground cover species. - Riparian forests often host plant species that have high moisture requirements. - The flora typically includes species native to
4941-447: The preying eagle. Authors on birds David Allen Sibley , Pete Dunne , and Clay Sutton described the behavioral difference between hunting eagles and other birds of prey thus (in this case the bald and golden eagles as compared to other North American raptors): They have at least one singular characteristic. It has been observed that most birds of prey look back over their shoulders before striking prey (or shortly thereafter); predation
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#17330855977725022-518: The reduced size of their aerodynamic feathers. Most eagles are larger than any other raptors , apart from some vultures . The smallest species of eagle is the Great Nicobar serpent eagle ( Spilornis klossi ), at 450 g (1 lb) and 40 cm (16 in). The largest species are discussed below. Like all birds of prey, eagles have very large hooked beaks for ripping flesh from their prey, strong, muscular legs, and powerful talons . The beak
5103-448: The region, adapted to the moist conditions provided by proximity to water bodies. In summary, riparian forests are characterized by their location along waterways, their intricate interplay with water and soil dynamics, a diverse array of vegetation layers, and a plant composition favoring moisture-dependent species. Riparian zones dissipate stream energy. The meandering curves of a river, combined with vegetation and root systems, slow
5184-490: The riparian forests may face further depletion, potentially leading to their complete disappearance by the year 2040. Riparian zones can also be found in Cape Agulhas region of South Africa. Riparian areas along South African rivers have experienced significant deterioration as a result of human activities. Similar to many other developed and developing areas worldwide, the extensive building of dams in upstream river areas and
5265-488: The solitary eagles are related to the black hawks and the Philippine eagle to the snake eagles. Major new research into eagle taxonomy suggests that the important genera Aquila and Hieraaetus are not composed of nearest relatives, and it is likely that a reclassification of these genera will soon take place, with some species being moved to Lophaetus or Ictinaetus . Family Accipitridae The modern English term for
5346-464: The southern part of Finland , near the Gulf of Finland , is the town of Kotka , which literally means "eagle", while the town of L'Aquila in the central part of Italy literally means "the eagle". In Britain before 1678, eagle referred specifically to the golden eagle , with the other native species, the white-tailed eagle , being known as erne . The modern name "golden eagle" for aquila chrysaetos
5427-403: The species and genera, with some individual eagles having engaged in quite varied techniques based on their environment and prey at any given time. Most eagles grab prey without landing and take flight with it, so the prey can be carried to a perch and torn apart. The bald eagle is noted for having flown with the heaviest load verified to be carried by any flying bird, since one eagle flew with
5508-528: The species in the former often capture various animals, especially other water birds , and are powerful kleptoparasites of other birds. The snake and serpent eagles of the genera Circaetus , Terathopius , and Spilornis predominantly prey on the great diversity of snakes found in the tropics of Africa and Asia. The eagles of the genus Aquila are often the top birds of prey in open habitats, taking almost any medium-sized vertebrate they can catch. Where Aquila eagles are absent, other eagles, such as
5589-453: The stream helps to shade the water, mitigating water temperature changes . Thinning of riparian zones has been observed to cause increased maximum temperatures, higher fluctuations in temperature, and elevated temperatures being observed more frequently and for longer periods of time. Extreme changes in water temperature can have lethal effects on fish and other organisms in the area. The vegetation also contributes wood debris to streams, which
5670-472: The study also identified a consistent reduction in the extent of these riparian forests over time, primarily attributed to a significant deforestation rate. In Nigeria, according to Momodu et al. (2011), there has been a notable decline of about 50% in the riparian forest coverage within the period of 1978 to 2000. This reduction is primarily attributed to alterations in land use and land cover. Additionally, their research indicates that if current trends continue,
5751-466: The subfamily Circaetinae . The fish eagles, booted eagles, and harpy eagles have traditionally been placed in the subfamily Buteoninae together with the buzzard-hawks (buteonine hawks) and harriers. Some authors may treat these groups as tribes of the Buteoninae; Lerner & Mindell proposed separating the eagle groups into their own subfamilies of Accipitridae . Sea eagles or fish eagles take fish as
5832-536: The two species share common habitat and prey and the large size and dominant nature of the wedge-tailed eagle could mean that the little eagle would be forced out of hunting and breeding grounds or even killed and eaten. Eagle See text Eagle is the common name for the golden eagle , bald eagle , and other birds of prey in the family of the Accipitridae . Eagles belong to several groups of genera , some of which are closely related. True eagles comprise
5913-473: The unique environmental gradients inherent to these ecosystems. Riparian forest can be found in Benin, West Africa. In Benin, where the savanna ecosystem prevails, "riparian forests" include various types of woodlands, such as semi-deciduous forests, dry forests, open forests, and woodland savannas . These woodlands can be found alongside rivers and streams. In Nigeria, you can also discover riparian zones within
5994-709: The use of pesticides have contributed to the species' rapid population drop. The booted eagle is a group of eagle that typically migrates across the Sahara Desert to Europe. It usually reaches Europe around the beginning of March and leaves by the end of September. It's interesting to note that these types of eagles usually mate with the same partner and return to the same areas years later. Female booted eagles usually lay 1-4 eggs, which promptly hatch after 37 to 40 days. Researchers estimate that there are between 3600 and 6900 pairs of booted eagles in Europe, which are mostly situated in
6075-498: The usual word for the bird. The Old English term is turn derived from Proto-Germanic : * arnuz and is cognate with other synonymous words in Germanic languages such as Swedish : örn , German : Aar and Gothic : ara . Through the Proto-Indo-European root, it is further related to words such as Greek : ὄρνις ("bird") and Lithuanian : erelis ("eagle"). Although "erne" can be used to refer to any eagle, it
6156-456: The very large harpy eagle , have relatively short wingspans, a feature necessary for being able to maneuver in quick, short bursts through densely forested habitats. Eagles in the genus Aquila , found almost exclusively in open country, are noted for their ability to soar, and have relatively long wings for their size. These lists of the top five eagles are based on weight, length, and wingspan, respectively. Unless otherwise noted by reference,
6237-484: The water's edge. - These ecosystems are intimately connected with dynamic water flow and soil processes, influencing their characteristics. - Riparian forests feature a diverse combination of elements, including: - Mesic terrestrial vegetation (vegetation adapted to moist conditions). - Dependent animal life, relying on the riparian environment for habitat and resources. - Local microclimate influenced by
6318-415: The water's pathway to lessen the energy of a flood, and help the water to deposit soil and seep into the flood zone. Another technique is to quickly establish ecological succession by encouraging fast-growing plants such as "weeds" ( pioneer species ) to grow. These may spread along the watercourse and cause environmental degradation , but may stabilize the soil, place carbon into the ground, and protect
6399-734: Was declared as 'Vulnerable' in the Australian Capital Territory under Section 38 of the Nature Conservation Act 1980. It was also listed as 'Vulnerable' in New South Wales (NSW) in Part 1 of Schedule 2 of the NSW Threatened Species Conservation Act 1995 and Gazetted on 12 February 2012. The little eagle is listed on the IUCN Red List as of least concern . Reasons for it being classified as 'least concern' are that
6480-570: Was introduced by the naturalist John Ray . The village of Eagle in Lincolnshire , England , has nothing to do with the bird; its name is derived from the Old English words for "oak" and "wood" (compare Oakley ). In the ancient Sumerian mythology , the mythical king Etana was said to have been carried into heaven by an eagle. Classical writers such as Lucan and Pliny the Elder claimed that
6561-505: Was recorded in 11% of cells, with the highest rates in New South Wales (NSW) and Victoria. During the second national bird atlas in 1998–2002, the little eagle was recorded in 59% of grid cells, at mostly low reporting rates (recorded in less than 20% of surveys per grid). Breeding was recorded in 5% of grid cells. Overall, there has been a national decline in reporting rate of 14%. In NSW over the last 20 years (two little eagle generations)
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