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59-525: Astur badius Scelospizias badius Micronisus badius The shikra ( Tachyspiza badia ) is a small bird of prey in the family Accipitridae found widely distributed in Asia and Africa where it is also called the little banded goshawk . The African forms may represent a separate species but have usually been considered as subspecies of the shikra. The shikra is very similar in appearance, as well as behavior, at least to some degree, to other species including

118-658: A lammergeier might have killed Aeschylus by accident. Many stories of Brazilian indigenous peoples speak about children mauled by Uiruuetê, the Harpy Eagle in Tupi language . Various large raptors like golden eagles are reported attacking human beings, but its unclear if they intend to eat them or if they have ever been successful in killing one. Some fossil evidence indicates large birds of prey occasionally preyed on prehistoric hominids. The Taung Child , an early human found in Africa,

177-467: A great deal of data is required. Dimorphisms can also be the product of intrasexual selection between males and females. It appears that both sexes of the species play a role in the sexual dimorphism within raptors; females tend to compete with other females to find good places to nest and attract males, and males competing with other males for adequate hunting ground so they appear as the most healthy mate. It has also been proposed that sexual dimorphism

236-465: A larger image to be projected onto the retina. The visual acuity of some large raptors such as eagles and Old World vultures are the highest known among vertebrates; the wedge-tailed eagle has twice the visual acuity of a typical human and six times that of the common ostrich , the vertebrate with the largest eyes. There are two regions in the retina, called the deep and shallow fovea, that are specialized for acute vision. These regions contain

295-688: A lost love wherein he compares her to a shikra. Bird of prey Birds of prey or predatory birds , also known as raptors , are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals , reptiles and other smaller birds). In addition to speed and strength, these predators have keen eyesight for detecting prey from a distance or during flight, strong feet with sharp talons for grasping or killing prey, and powerful, curved beaks for tearing off flesh. Although predatory birds primarily hunt live prey, many species (such as fish eagles , vultures and condors ) also scavenge and eat carrion . Although

354-425: A narrow and somewhat long tail. Adults are whitish on the underside with fine rufous bars while the upperparts are grey. The lower belly is less barred and the thighs are whitish. Males have a red iris while the females have a less red (yellowish orange) iris and brownish upperparts apart from heavier barring on the underparts. The females are slightly larger. The mesial stripe on the throat is dark but narrow. In flight

413-404: A shikra and a Small Blue Kingfisher has been observed diving into water to escape. Babblers have been observed to rally together to drive away a shikra. They will descend to the ground to feast on emerging winged termites, hunt at dusk for small bats (such as Cynopterus sphinx ) and in rare instances they may even resort to feed on carrion. In one instance a male was found feeding on a dead chick at

472-435: Is 146.5 km (56.6 sq mi). It is approximately 1,600 km (990 mi) away from mainland (India) and 305 km (190 mi) south to capital Port Blair . The highest peak of Katchal is 227 m (745 ft) high. The hills of Katchal are composed of calcareous sandstone and marble slates, and in the tropical forest of Katchal there are many pythons , black monkeys and pigs . Katchal Island

531-633: Is 3 to 4 eggs (when eggs are removed they lay replacements and one observer noted that they could lay as many as 7 in a season) which are pale bluish grey stippled on the broad end in black. The incubation period is 18 to 21 days. The shikra was a favourite among falconers in India and Pakistan due to the ease with which it could be trained and was frequently used to procure food for the more prized falcons. They were noted for their pluck and ability to take much larger birds including partridges, crows and even young peafowl. The word shikra or shikara means hunter in

590-582: Is a deprecated superorder within Raptores, formerly composed of the orders Falconiformes and Strigiformes. The clade was invalidated after 2012. Falconiformes is now placed in Eufalconimorphae , while Strigiformes is placed in Afroaves . The order Accipitriformes is believed to have originated 44 million years ago when it split from the common ancestor of the secretarybird ( Sagittarius serpentarius ) and

649-729: Is a simplified phylogeny of Telluraves which is the clade where the birds of prey belong to along with passerines and several near-passerine lineages. The orders in bold text are birds of prey orders; this is to show the paraphyly of the group as well as their relationships to other birds. Accipitriformes (hawks, vultures, and relatives) [REDACTED] Strigiformes (owls) [REDACTED] Coraciimorphae (woodpeckers, rollers, hornbills, etc.) [REDACTED] Cariamiformes (seriemas) [REDACTED] Falconiformes (falcons) [REDACTED] Psittacopasserae (parrots and songbirds) [REDACTED] A recent phylogenomic study from Wu et al. (2024) has found an alternative phylogeny for

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708-530: Is adequate and sufficient. Power station which is electrified and has plans to augment the DG (Diesel Generators) capacity at Katchal Islands by 3x128 KW DG Sets. 9 km of roads (Pucca road). Police Station:1 Jetty: 1, A Berthable Jetty at Nirma Nagar Communication: Wireless Local Loop Phones and PSTN phones. Mobile phone signal strength is currently very low. Information Technology: Connected by VSAT under E-Governance project of A & N Administration for speeding up

767-492: Is an order of telluravian birds consisting of the living seriemas and extinct terror birds . Jarvis et al. 2014 suggested including them in the category of birds of prey, and McClure et al. 2019 considered seriemas to be birds of prey. The Peregrine Fund also considers seriemas to be birds of prey. Like most birds of prey, seriemas and terror birds prey on vertebrates . However, seriemas were not traditionally considered birds of prey. There were traditionally classified in

826-538: Is believed to have been killed by an eagle-like bird similar to the crowned eagle . The Haast's eagle may have preyed on early humans in New Zealand , and this conclusion would be consistent with Maori folklore . Leptoptilos robustus might have preyed on both Homo floresiensis and anatomically modern humans, and the Malagasy crowned eagle , teratorns , Woodward's eagle and Caracara major are similar in size to

885-445: Is commonly believed that the dimorphisms found in raptors occur due to sexual selection or environmental factors. In general, hypotheses in favor of ecological factors being the cause for sexual dimorphism in raptors are rejected. This is because the ecological model is less parsimonious , meaning that its explanation is more complex than that of the sexual selection model. Additionally, ecological models are much harder to test because

944-507: Is derived from the Latin word rapio , meaning "to seize or take by force". The common names for various birds of prey are based on structure, but many of the traditional names do not reflect the evolutionary relationships between the groups. Many of these English language group names originally referred to particular species encountered in Britain . As English-speaking people travelled further,

1003-515: Is found in a range of habitats including forests, farmland and urban areas. They are usually seen singly or in pairs. The flight is typical with flaps and glides. During the breeding season pairs will soar on thermals and stoop at each other. Their flight usually draws alarms among smaller birds and squirrels. They feed on rodents (including Meriones hurrianae ), squirrels, small birds, small reptiles (mainly lizards but sometimes small snakes) and insects. Small birds usually dive through foliage to avoid

1062-441: Is home to both indigenous and non-indigenous people. Katchal is inhabited by Nicobari Tribes and Migrated Tamilians (For Rubber plantation workers under Sastri-Srimao Bandaranayaka Pact of 1964). After the tsunami almost all the tribal chiefs and their heirs were killed, leaving the tribes virtually headless. Katchal is the largest island of the central group of islands and had 35 villages (of which six were main villages). After

1121-411: Is merely the product of disruptive selection , and is merely a stepping stone in the process of speciation, especially if the traits that define gender are independent across a species. Sexual dimorphism can be viewed as something that can accelerate the rate of speciation. In non-predatory birds, males are typically larger than females. However, in birds of prey, the opposite is the case. For instance,

1180-468: The Chinese sparrowhawk ( Accipiter soloensis ), Eurasian goshawk ( Astur gentilis ) and Eurasian sparrowhawk ( Accipiter nisus ). They have a sharp two note call and have the typical flap and glide flight. Their calls are imitated by drongos and the common hawk-cuckoo resembles it in plumage. This species was formerly placed in the genus Accipiter . The shikra was formally described in 1788/1789 by

1239-497: The kestrel is a type of falcon in which males are the primary providers, and the females are responsible for nurturing the young. In this species, the smaller the kestrels are, the less food is needed and thus, they can survive in environments that are harsher. This is particularly true in the male kestrels. It has become more energetically favorable for male kestrels to remain smaller than their female counterparts because smaller males have an agility advantage when it comes to defending

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1298-641: The merlin ( Falco columbarius ). The taxonomy of Carl Linnaeus grouped birds (class Aves) into orders, genera, and species, with no formal ranks between genus and order. He placed all birds of prey into a single order, Accipitres , subdividing this into four genera: Vultur (vultures), Falco (eagles, hawks, falcons, etc.), Strix (owls), and Lanius (shrikes). This approach was followed by subsequent authors such as Gmelin , Latham and Turton . Louis Pierre Vieillot used additional ranks: order, tribe, family, genus, species. Birds of prey (order Accipitres) were divided into diurnal and nocturnal tribes;

1357-455: The township of Nancowry of Katchal tehsil . The Island is not open to tourists and special permission is required from the local administration at Port Blair. These are the facilities on the island: Health : Primary Health Center: 1 Secondary Health Center: 3 Education : Primary School - 6 ( Kindergarten to 5th Standard), Middle School - 2 ( 6th to 8th Standard), Senior Secondary School - 1 (11th to 12th Standard) Govt. : Water supply

1416-509: The German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus 's Systema Naturae . He placed it with the eagles, hawks and relatives in the genus Falco and coined the binomial name Falco badius . Gmelin's description was based on the "brown hawk" from Ceylon that had been described and illustrated in 1776 by the English naturalist Peter Brown . The shikra

1475-468: The German naturalist Johann Jakob Kaup . The word Tachyspiza combines the Ancient Greek ταχυς ( takhus ) meaning "fast" with σπιζιας ( spizias ) meaning "hawk". The specific epithet badia is Latin meaning "chestnut-coloured" or "brown". Six subspecies are recognised: The shikra is a small raptor (26–30 cm long) and like most other Tachyspiza hawks, this species has short rounded wings and

1534-471: The Haast's eagle, implying that they similarly could pose a threat to a human being. Birds of prey have incredible vision and rely heavily on it for a number of tasks. They utilize their high visual acuity to obtain food, navigate their surroundings, distinguish and flee from predators, mating, nest construction, and much more. They accomplish these tasks with a large eye in relation to their skull, which allows for

1593-635: The Hindi language (the male was called chipak or chipka based on call) The word Shikra is borrowed from the Urdu word (شِـكْـره) which is derived from the word shikari (شِكارى) meaning hunter. The word is also used in the French name Le Chicquera which was however given to the red-necked falcon by Levaillant in 1799. Famous Punjabi poet Shiv Kumar Batalvi wrote a poem called "Main Ik Shikra Yaar Banaya" about

1652-633: The Island, disturbing the socio-economic set-up of its inhabitants. Of the 5,000 people missing (5000 is official - actual is more) in the Andaman and Nicobar Islands, 1,549 were believed to be from Katchal. To support the local population a sizable number of Govt. Staffs were posted to this Island prior to the Tsunami day. Most of the staff went missing as majority of the Govt. provided Staff Quarters were situated very close to

1711-489: The accipitrid species. The phylogeny of Accipitriformes is complex and difficult to unravel. Widespread paraphylies were observed in many phylogenetic studies. More recent and detailed studies show similar results. However, according to the findings of a 2014 study, the sister relationship between larger clades of Accipitriformes was well supported (e.g. relationship of Harpagus kites to buzzards and sea eagles and these latter two with Accipiter hawks are sister taxa of

1770-691: The bills of birds of prey shown by hunters. In Britain, kites and buzzards were seen as destroyers of game and killed, for instance in 1684–5 alone as many as 100 kites were killed. Rewards for their killing were also in force in the Netherlands from 1756. From 1705 to 1800, it has been estimated that 624087 birds of prey were killed in a part of Germany that included Hannover, Luneburg, Lauenburg and Bremen with 14125 claws deposited just in 1796–97. Many species also develop lead poisoning after accidental consumption of lead shot when feeding on animals that had been shot by hunters. Lead pellets from direct shooting that

1829-522: The biogeographic realms of the Southern Hemisphere. The appearance of migratory behaviour occurred in the tropics parallel with the range expansion of migratory species to temperate habitats. Similar results of southern origin in other taxonomic groups can be found in the literature. Distribution and biogeographic history highly determine the origin of migration in birds of prey. Based on some comparative analyses, diet breadth also has an effect on

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1888-581: The birds have escaped from also cause reduced fitness and premature deaths. Some evidence supports the contention that the African crowned eagle occasionally views human children as prey, with a witness account of one attack (in which the victim, a seven-year-old boy, survived and the eagle was killed), and the discovery of part of a human child skull in a nest. This would make it the only living bird known to prey on humans, although other birds such as ostriches and cassowaries have killed humans in self-defense and

1947-516: The clade containing Aquilinae and Harpiinae). The diurnal birds of prey are formally classified into six families of two different orders (Accipitriformes and Falconiformes). These families were traditionally grouped together in a single order Falconiformes but are now split into two orders, the Falconiformes and Accipitriformes . The Cathartidae are sometimes placed in a separate order Cathartiformes . Formerly, they were sometimes placed in

2006-439: The evolution of migratory behaviour in this group, but its relevance needs further investigation. The evolution of migration in animals seems to be a complex and difficult topic with many unanswered questions. A recent study discovered new connections between migration and the ecology, life history of raptors. A brief overview from abstract of the published paper shows that "clutch size and hunting strategies have been proved to be

2065-462: The existing literature combining anatomical, genetic, and behavioural studies showed that, in general, raptors have functional olfactory systems that they are likely to use in a range of different contexts. Birds of prey have been historically persecuted both directly and indirectly. In the Danish Faroe Islands , there were rewards Naebbetold (by royal decree from 1741) given in return for

2124-493: The familiar names were applied to new birds with similar characteristics. Names that have generalised this way include: kite ( Milvus milvus ), sparrowhawk or sparhawk ( Accipiter nisus ), goshawk ( Accipiter gentilis ), kestrel ( Falco tinninculus ), hobby ( Falco subbuteo ), harrier (simplified from "hen-harrier", Circus cyaneus ), buzzard ( Buteo buteo ). Some names have not generalised, and refer to single species (or groups of closely related (sub)species), such as

2183-400: The highest density of photoreceptors, and provide the highest points of visual acuity. The deep fovea points forward at an approximate 45° angle, while the shallow fovea points approximately 15° to the right or left of the head axis. Several raptor species repeatedly cock their heads into three distinct positions while observing an object. First, is straight ahead with their head pointed towards

2242-409: The highly acute deep fovea. Like all birds, raptors possess tetrachromacy , however, due to their emphasis on visual acuity, many diurnal birds of prey have little ability to see ultraviolet light as this produces chromatic aberration which decreases the clarity of vision. Katchal Island Katchal Island was previously known as Tihanyu. Due to the remote location and lack of exposure with

2301-468: The island of Car Nicobar , earlier treated as a subspecies butleri and that on Katchal Island , obsoletus are now treated as a sub-species within a full species, the Nicobar sparrowhawk ( Tachyspiza butleri ). The west African population T. b. sphenurus is migratory while the southern African T. b. polyzonoides is more nomadic in its movements. In Asia only T. b. cenchroides is migratory. The shikra

2360-458: The island. Nicobar Islands have experienced all kinds of external influences for centuries, because they are located along an ancient international sea trade route and have been known to voyagers and scholars since ancient times. Due to this, the islands have been receiving external influences, which have affected their culture and race over the centuries. According to recent history, an archeological inscription dating to AD 1059 says that Nicobar

2419-464: The male seen from below shows a light wing lining (underwing coverts) and has blackish wing tips. When seen from above the tail bands are faintly marked on the lateral tail feathers and not as strongly marked as in the Eurasian sparrowhawk . The central tail feathers are unbanded and only have a dark terminal band. Juveniles have dark streaks and spots on the upper breast and the wing is narrowly barred while

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2478-583: The most important variables in shaping distribution areas, and also the geographic dissimilarities may mask important relationships between life history traits and migratory behaviours. The West Palearctic-Afrotropical and the North-South American migratory systems are fundamentally different from the East Palearctic-Indomalayan system, owing to the presence versus absence of ecological barriers." Maximum entropy modelling can help in answering

2537-444: The nest and hunting. Larger females are favored because they can incubate larger numbers of offspring, while also being able to brood a larger clutch size. It is a long-standing belief that birds lack any sense of smell, but it has become clear that many birds do have functional olfactory systems . Despite this, most raptors are still considered to primarily rely on vision, with raptor vision being extensively studied. A 2020 review of

2596-423: The nest. Their calls are mimicked by drongos and this behaviour is thought to aid in stealing food by alarming other birds that the drongos associate with. The breeding season in India is in summer from March to June. The nest is a platform similar to that of crows lined with grass. Both sexes help build the nest, twigs being carried in their feet. Like crows, they may also make use of metal wires. The usual clutch

2655-629: The object. Second and third are sideways to the right or left of the object, with their head axis positioned approximately 40° adjacent to the object. This movement is believed to be associated with lining up the incoming image to fall on the deep fovea. Raptors will choose which head position to use depending on the distance to the object. At distances as close as 8m, they used primarily binocular vision. At distances greater than 21m, they spent more time using monocular vision. At distances greater than 40m, they spent 80% or more time using their monocular vision. This suggests that raptors tilt their head to rely on

2714-464: The oldest dates published so far in the case of birds of prey. For example, a previous reconstruction of migratory behaviour in one Buteo clade with a result of the origin of migration around 5 million years ago was also supported by that study. Migratory species of raptors may have had a southern origin because it seems that all of the major lineages within Accipitridae had an origin in one of

2773-412: The order Ciconiiformes . The secretary bird and/or osprey are sometimes listed as subfamilies of Acciptridae: Sagittariinae and Pandioninae, respectively. Australia's letter-winged kite is a member of the family Accipitridae , although it is a nocturnal bird. The nocturnal birds of prey—the owls —are classified separately as members of two extant families of the order Strigiformes : Below

2832-503: The order Gruiformes . And they are still not considered birds of prey in general parlance. Their bodies are also shaped completely differently from birds of prey. They have long legs and long necks. While secretarybirds also have long legs, they otherwise resemble raptors. Seriemas do not. Their beak is hooked, but too long. Migratory behaviour evolved multiple times within accipitrid raptors. The earliest event occurred nearly 14 to 12 million years ago. This result seems to be one of

2891-808: The owls remained monogeneric (family Ægolii, genus Strix ), whilst the diurnal raptors were divided into three families: Vulturini, Gypaëti, and Accipitrini. Thus Vieillot's families were similar to the Linnaean genera, with the difference that shrikes were no longer included amongst the birds of prey. In addition to the original Vultur and Falco (now reduced in scope), Vieillot adopted four genera from Savigny: Phene , Haliæetus , Pandion , and Elanus . He also introduced five new genera of vultures ( Gypagus , Catharista , Daptrius , Ibycter , Polyborus ) and eleven new genera of accipitrines ( Aquila , Circaëtus , Circus , Buteo , Milvus , Ictinia , Physeta , Harpia , Spizaëtus , Asturina , Sparvius ). Falconimorphae

2950-820: The placement of the birds of prey. Their analysis has found support in a clade consisting of the Strigiformes and Accipitriformes in new clade Hieraves . Hieraves was also recovered to be the sister clade to Australaves (which it includes the Cariamiformes and Falconiformes along with Psittacopasserae ). Below is their phylogeny from the study. Coraciimorphae (woodpeckers, rollers, hornbills, etc.) [REDACTED] Strigiformes (owls) [REDACTED] Accipitriformes (hawks, vultures, and relatives) [REDACTED] Cariamiformes (seriemas) [REDACTED] Falconiformes (falcons) [REDACTED] Psittacopasserae (parrots and songbirds) [REDACTED] Cariamiformes

3009-464: The question: why species winters at one location while the others are elsewhere. Temperature and precipitation related factors differ in the limitation of species distributions. "This suggests that the migratory behaviours differ among the three main migratory routes for these species" which may have important conservational consequences in the protection of migratory raptors. Birds of prey (raptors) are known to display patterns of sexual dimorphism . It

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3068-581: The rest of the world, outsiders economically exploited the innocent islanders for a long time. To stop their economic exploitation, the Government of India declared the Nicobar Islands an Aboriginal Tribal Reserve Area (ATRA) on 2 April 1957. This made the Nicobar Islands inaccessible to outsiders and currently even Indian nationals need a special tribal pass to visit the islands. Only Government Servants (outsiders) posted to Katchal Islands are allowed to stay in

3127-426: The sea shore and a very few managed to escape to the nearby hill. To cite an example - not a single teacher out of 47 posted here prior on 26-12-2004 was found alive. Some people managed to escape the waters by clinging over to coconut tree tops. Of the 344 people reported dead, only one body could be identified. Either the bodies were decomposed beyond recognition or there were no survivors to claim them. Its area

3186-411: The tail has dark but narrow bands. A post juvenile transitional plumage is found with very strong barring on the contour feathers of the underside. The call is pee-wee , the first note being higher and the second being longer. In flight the calls are shorter and sharper kik-ki ... kik-ki . The Chinese sparrowhawk is somewhat similar in appearance but has swollen bright orange ceres and yellow legs with

3245-969: The term "bird of prey" could theoretically be taken to include all birds that actively hunt and eat other animals, ornithologists typically use the narrower definition followed in this page, excluding many piscivorous predators such as storks , cranes , herons , gulls , skuas , penguins , and kingfishers , as well as many primarily insectivorous birds such as passerines (e.g. shrikes ), nightjars , frogmouths , songbirds such as crows and ravens , alongside opportunistic predators from predominantly frugivorous or herbivorous ratites such as cassowaries and rheas . Some extinct predatory telluravian birds had talons similar to those of modern birds of prey, including mousebird relatives ( Sandcoleidae ), and Messelasturidae indicating possible common descent . Some Enantiornithes also had such talons, indicating possible convergent evolution , as enanthiornithines weren't even modern birds . The term raptor

3304-456: The tsunami, the natives regrouped and formed five tribal villages in the island viz. E-Wall , Meenakshi Ram Nagar , Japan Tikrey , Sallo Tikrey , and Upper Katchal . Mildera is another village in the island inhabited by non tribal people (Tamil repatriates and Ranchi communities). Languages spoken in Katchal are Nicobarese , Hindi , Tamil , Telugu and Santali . Katchal Island belongs to

3363-566: The wing tips entirely black. Subspecies cenchroides is larger and paler and found in Turkestan, Afghanistan and eastern Iran. The Indian population dussumieri is resident on the plains and lower hills (up to 1400 m in the Himalayas). The nominate form is found in Sri Lanka and has somewhat darker grey upperparts. The Burmese shikra A. b. poliopsis may represent a distinct species. The population on

3422-536: Was formerly placed in the large and diverse genus Accipiter . In 2024 a comprehensive molecular phylogenetic study of the Accipitridae confirmed earlier work that had shown that the genus was polyphyletic . To resolve the non- monophyly , Accipiter was divided into six genera. The genus Tachyspiza was resurrected to accommodate the shikra together with 26 other species that had previously been placed in Accipiter . The resurrected genus had been introduced in 1844 by

3481-592: Was part of the overseas kingdom of Tamil Chola King of Tanjore . In 1869, the British took possession of the Nicobar Islands from the Danes and made them a part of modern India. At sunrise on 1 January 2000, Katchal Island was in the news. Many voyagers had converged on it for a glimpse of the millennium's first sunrise. Katchal was one of the worst affected islands during the December 26th 2004 Tsunami . The tsunami devastated

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