L. t. palawana (Mayr, 1949) – Palawan group (southwest Philippines)
L. t. castroi (Manuel & Gilliard, 1952) – Polillo (north Philippines)
L. t. extima (Mayr, 1945) – southeast Philippines
Description
Adults are plain dark grey-brown above. Note the crest.
This raptor has short broad wings and a long tail, both adaptations to manoeuvring through trees. It is 30–46cm in length, with the female much larger than the male. The larger size and a short crest, clearly visible in profile, are the best distinctions from its relative, the besra (Tachyspiza virgata).[8]
The male has a dark brown crown, grey head sides and black moustachial and throat stripes. The pale underparts are patterned with rufous streaks on the breast and bars on the belly. The larger female has a browner head and brown underpart streaks and bars. The juvenile has pale fringes to its head feathers, and the underpart background colour is buff rather than white.[8]
The flight is a characteristic "slow flap, slow flap, straight glide", similar to other Accipiter species such as the Eurasian goshawk (Astur gentilis).[8]
Range and ecology
Taiwan crested goshawk (L. t. formosae) eating a Taiwan barbet
The crested goshawk breeds in southern Asia, from India and Sri Lanka to southern China, Indonesia, Taiwan, and the Philippines. It is primarily a lowland bird, and an all-year resident. Even in upland habitat it is resident in winter, for example in the Himalayasfoothills of Bhutan or in Sal (Shorea robusta) forest in India's Dehradun district. In these lands at the northern end of its range, it is generally very rare however. Essentially it is limited to tropical and warm subtropical areas.[9] In Malaysia and Singapore there is increasing evidence of this species adapting to life in urban centres.[10]
Like its relatives, this secretive forest bird hunts birds, mammals and reptiles in woodland, relying on surprise as it flies from a perch to catch its prey unaware. It builds a stick nest in a tree and lays two or three eggs.[8]
↑ Catanach, T.A.; Halley, M.R.; Pirro, S. (2024). "Enigmas no longer: using ultraconserved elements to place several unusual hawk taxa and address the non-monophyly of the genus Accipiter (Accipitriformes: Accipitridae)". Biological Journal of the Linnean Society. 144 (2): blae028. doi:10.1093/biolinnean/blae028.
↑ Mindell, D.; Fuchs, J.; Johnson, J. (2018). "Phylogeny, Taxonomy, and Geographic Diversity of Diurnal Raptors: Falconiformes, Accipitriformes, and Cathartiformes". In Sarasola, J.H.; Grange, J.M.; Negro, J.J. (eds.). Birds of Prey: Biology and conservation in the XXI century. Cham, Switzerland: Springer. pp.3–32. ISBN978-3-319-73744-7.
Dalgleish, R.C. (ed.) (2003): Birds and their associated Chewing Lice: Accipitridae. Version of 2003-AUG-30. Retrieved 2009-JUN-23.
Elbel, Robert E. & Price, Roger D. (1973): Three new Oriental and New Guinean Degeeriella (Mallophaga: Philopteridae). Pacific Insects15(1): 95-101. PDF fulltext
Grimmett, Richard; Inskipp, Carol, Inskipp, Tim & Byers, Clive (1999): Birds of India, Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka, and the Maldives. Princeton University Press, Princeton, N.J.. ISBN0-691-04910-6
Inskipp, Carol; Inskipp, Tim & Sherub (2000): The ornithological importance of Thrumshingla National Park, Bhutan. Forktail14: 147–162. PDF fulltextArchived 2008-10-11 at the Wayback Machine
Singh, A.P. (2002): New and significant records from Dehra Dun valley, lower Garhwal Himalayas, India. Forktail18: 151–153. PDF fulltext
Shepherd, C. R. (2018). Crested Goshawk Accipiter trivirgatus may adapt well to life in urban areas across its range in Asia. BirdingASIA 29: 34–35.
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