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Gray-lined hawk
Conservation status
	; Least Concern (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Accipitriformes
Family:	Accipitridae
Genus:	Buteo
Species:	B. nitidus
Binomial name
	Buteo nitidus; (Latham, 1790)
Subspecies
	B. n. blakei - Hellmayr & Conover, 1949; B. n. nitidus - (Latham, 1790); B. n. pallidus - (Todd, 1915);
Synonyms
	Asturina nitida

The gray-lined hawk (Buteo nitidus) is a smallish raptor found in open country and forest edges. It is sometimes placed in the genus Asturina as Asturina nitida. The species has been split by the American Ornithological Society from the gray hawk. The gray-lined hawk is found from El Salvador to Argentina, as well as on the Caribbean island of Trinidad.

Description

The gray-lined hawk is 46–61 cm (18–24 in) in length and weighs 475 g (16.8 oz) average. The adult has a pale gray body, the tail is black with three white bands and the legs are orange. It has fine white barring on the upper parts. Immature birds have dark brown upperparts, a pale-banded brown tail, brown-spotted white underparts and a brown streaked buff head and neck. This species is quite short-winged, and has a fast agile flight for a Buteo.

Diet

It feeds mainly on lizards and snakes, but will also take insects (such as beetles and grasshoppers), small mammals (such as rabbits, squirrels and mice), birds (such as quails and nestling doves), frogs, toads, other amphibians and fish.^[3]^[4]^[5]^[6] It usually sits on an open high perch from which it swoops on its prey, but will also hunt from a low glide.

Breeding

The nest is of sticks and built high in a tree. The usual clutch is one to three, usually two white to pale blue eggs.^[3] The young take about 6 weeks to fledging.

References

^ BirdLife International. (2020). "Buteo nitidus". IUCN Red List of Threatened Species. 2020: e.T22727766A168803943. doi:10.2305/IUCN.UK.2020-3.RLTS.T22727766A168803943.en. Retrieved 5 September 2024.
^ Gill F, D Donsker & P Rasmussen (Eds). 2020. IOC World Bird List (v10.2). doi : 10.14344/IOC.ML.10.2.
^ ^a ^b "Asturina nitida (Gray hawk)". Animal Diversity Web.
^ "Buteo nitidus (Grey or Grey-lined Hawk)" (PDF). The Online Guide to the Animals of Trinidad and Tobago. UWI.
^ "Gray-lined Hawk | the Peregrine Fund".
^ Ferguson-Lees, J.; Christie, D.A.; Franklin, K.; Mead, D.; Burton, P. (2001). Raptors of the world. Helm Identification Guides.

ffrench, Richard; O'Neill, John Patton & Eckelberry, Don R. (1991): A guide to the birds of Trinidad and Tobago (2nd edition). Comstock Publishing, Ithaca, N.Y.. ISBN 0-8014-9792-2
Hilty, Steven L. (2003): Birds of Venezuela. Christopher Helm, London. ISBN 0-7136-6418-5
Stiles, F. Gary & Skutch, Alexander Frank (1989): A guide to the birds of Costa Rica. Comistock, Ithaca. ISBN 0-8014-9600-4
Banks, Richard C.; Cicero, Carla; Dunn, Jon L.; Kratter, Andrew W.; Rasmussen, Pamela C.; Remsen, J. V.; Rising, James D.; Stotz, Douglas F. (2007). "Forty-Seventh Supplement to the American Ornithologists' Union Check-List of North American Birds". The Auk. 123 (3): 926–936. doi:10.1642/0004-8038(2006)123[926:FSTTAO]2.0.CO;2.
Riesing, M. J.; L. Kruckenhauser; A. Gamauf; E. Haring (2003). "Molecular phylogeny of the genus Buteo (Aves: Accipitridae) based on mitochondrial marker sequences". Molecular Phylogenetics and Evolution. 27 (2): 328–342. Bibcode:2003MolPE..27..328R. doi:10.1016/S1055-7903(02)00450-5. PMID 12695095.