Australia (B), Christmas Island (B), Indonesia (B), New Caledonia (B), Norfolk Island (B), Papua New Guinea (B), Solomon Islands (B), Timor-Leste (B) (NB), Vanuatu (B).
Nest
A small, flat, structure of sticks, lined with leaves, usually placed among the topmost branches of a tall tree.
Eggs (Guide)
1 - 5, usually 2 or 3, laid at 2 - 4 day intervals; smooth, matt, white or blu-tinged, sparingly blotched with red-brown, dark brown or lavender; swollen-oval; about 46 x 37 mm. Incubation: begins with second egg, about 29 - 33 days; mainly by female.
Young
Semi-altricial, nidicolous. Fledge in 4 - 5 weeks.
Subspecies
Accipiter hiogaster has been split from Brown Goshawk (Accipiter fasciatus) by Christidis and Boles (2008), but BirdLife International treat as a subspecies of Brown Goshawk (Accipiter fasciatus) following Sibley and Monroe (1990, 1993).
Subspecies natalis may belong to Grey Goshawk (Accipiter novaehollandiae) complex, or might even be separate species.
The following 13 subspecies are recognised:
natalis (Lister, 1889) - Christmas I (Indian Ocean).
polycryptus Rothschild & Hartert, 1915 - Eastern New Guinea.
buruensis Stresemann, 1914 - Buru (Moluccas).
dogwa Rand, 1941 - Southern New Guinea.
didimus (Mathews, 1912) - Northern Australia; Buru (southern Moluccas).
fasciatus (Vigors & Horsfield, 1827) - Timor (Lesser Sundas); Australia and Tasmania; Rennell and Bellona Is (Solomons).
vigilax (Wetmore, 1926) - New Caledonia, Loyalty Is, Vanuatu.
rosselianus Mayr, 1940 - Rossel Island, Lousiade Archaepeligo. Considered by some authors to be a subspecies of Collared Sparrowhawk (Accipiter cirrocephalus).
Similar Species
Collared Sparrowhawk (Accipiter cirrocephalus)
Smaller. Similar in plumage, but has shorter, thinner legs and the tail is square or slightly notched when folded, rather than rounded.
The Field Guide to the Birds of Australia Pizzey, G., and Knight, E., 1997, Angus & Robertson, Sydney ISBN 0 207 19691 5
Field Guide to Australian Birds Morecombe, M., 2000, Steve Parish Publishing Pty Ltd. ISBN 1 876282 10 X
Field Guide to the Birds of Australia Simpson, K., and Day, N., 1999, 6th Edition, Viking ISBN 0 670 87918 5
Reader's Digest Complete Book of Australian Birds 1988, 2nd Edition, Reader's Digest ISBN 0 949819 99 9
What Bird is That? 1984, Revised Edition, Angus & Robertson, Sydney ISBN 0 207 14846 5
Handbook of Australian, New Zealand & Antarctic Birds 1990 - , Oxford University Press, Melbourne ISBN 0 19 553244 9
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