White-necked hawk
White-necked hawk | |
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White-necked hawk at Southeast Brazil
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Accipitriformes |
Family: | Accipitridae |
Genus: | Buteogallus |
Species: | B. lacernulatus
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Binomial name | |
Buteogallus lacernulatus (Temminck, 1827)
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Synonyms | |
Leucopternis lacernulata (lapsus) |
The white-necked hawk (Buteogallus lacernulatus) is a
Taxonomy and systematics
The white-necked hawk was for a time placed in genus Leucopternis but molecular studies placed it in Buteogallus. A 2009 paper proposed the new
Description
The white-necked hawk is 43 to 48 cm (17 to 19 in) long with a 91 to 101 cm (36 to 40 in) wingspan. Males and females have the same plumage, though females are about 4% larger than males. Adults have a white head and underparts and black upperparts. Their tail is black with a wide white band in the middle. Their eye is brown or pale yellow and their legs and feed yellow. Immatures are similar to adults but with dark streaks on their crown and neck, brown tips on some upperparts feathers, and white barring on the black base of their tail.[4]
Distribution and habitat
The white-necked hawk is found discontinuously in southeastern Brazil from
Behavior
Movement
The white-necked hawk is generally sedentary but there is some evidence of wandering or dispersal from its usual habitat.[4]
Feeding
The white-necked hawk takes its prey on the ground, dropping from a perch that may be as low as 1.5 m (4.9 ft) high. It is known to follow army ants and monkey troops to prey on what they flush. The data on its diet are inconclusive. Some authors believe that arthropods are its primary prey. Others maintain that it is more of a generalist with a diet of arthropods, reptiles, amphibians, mammals, birds, and snails.[4]
Breeding
Nothing is known about the white-necked hawk's breeding biology.[4]
Vocalization
As of late 2022 xeno-canto had only one recording of a white-necked hawk and the Cornell Lab of Ornithology's Macaulay Library had three. Its vocalizations have not been transcribed.[4]
Status
The
References
- ^ . Retrieved 9 December 2022.
- ^ a b Gill, F.; Donsker, D.; Rasmussen, P., eds. (August 2022). "Hoatzin, New World vultures, Secretarybird, raptors". IOC World Bird List. v 12.2. Retrieved December 8, 2022.
- ^ a b Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved July 24, 2022
- ^ a b c d e f g Bierregaard, R. O., G. M. Kirwan, and D. A. Christie (2020). White-necked Hawk (Buteogallus lacernulatus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whnhaw2.01 retrieved December 9, 2022