Bangladesh, Brunei Darussalam, Cambodia, China (mainland), India, Indonesia, Japan, Laos, Malaysia, Myanmar, Nepal, Philippines, Singapore, Sri Lanka, Taiwan (China), Thailand, Vietnam.
Vagrant to Christmas Island, Palau.
South-western India, in Western Ghats, south to Nilgiris and southern Kerala; Assam to southern China and south through Indochina to Philippines; Nicobar Is. Winters in Sri Lanka, Malay Peninsula and Greater Sundas.
Voice
A series of 10 - 15 deep, 'hoo, hoo, hoo-' notes at intervals of 1 - 2 seconds. Often heard at dawn and dusk, from a high perch in the forest canopy.
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
BirdLife International Species Factsheet