Ali, Sálim. 1996.
The Book of Indian Birds
Bombay Natural History Society. Oxford University Press. Mumbai, Delhi, Calcuta, Madras. 354 pgs.
(ISBN 0 19 563731 3)

American Ornithologists' Union. 2000.
Forty-Second Supplement to the American Ornithologists' Union Check-list of North American Birds
Auk. Vol 117. No 3. pgs 847-858.

Beaman, Mark and Steve Madge. 1998.
The Handbook of Bird Identification for Europe and the Western Palearctic
Princeton University Press. Princeton, New Jersey. 868 pgs.
(ISBN 0-691-02726-9, LC: QL690.A1B385 1998)

Clements, James F. 2000.
Birds of the World: A Checklist: Fifth Edition.
Ibis Publishing Company. Vista, California. 867 pgs.
(ISBN: 0-934797-16-1)

Dickinson, Edward C. (Editor). 2003.
The Howard & Moore Complete Checklist of the Birds of the World. Third Edition.
Princeton University Press, Princeton, New Jersey. 1039 pgs. (ISBN: 0-691-11701-2)

Hancock, James, and James Kushlan. 1984.
The herons handbook
Harper & Row, Publishers, Inc. New York, New York. 288 pgs.
(ISBN 0-06-015331-8)

MacKinnon, John and Karen Phillipps. 1993.
A Field Guide to the Birds of Borneo, Sumatra, Java and Bali
Oxford University Press. Oxford, New York, Tokyo. 491 pgs.
(ISBN: 0 19 854035 3)

McNeil, Raymond, Pierre Drapeau, and Raymond Pierotti. 1993.
Nocturnality in Colonial Waterbirds: Occurrence, Special Adaptations, and Suspected Benefits
en Current Ornithology Vol 10. Edited by Dennis M. Power.
Plenum Press. New York and London. pgs 187-246.
(ISBN: 0-306-44282-5)

Smythies, Bertram E. 1968.
The Birds of Borneo
Oliver & Boyd. Edinburgh and London. 593 pgs.

Wells, David R. 1999.
The Birds of the Thai-Malay Peninsula: Covering Burma and Thailand south of the eleventh parallel, Peninsular Malaysia and Singapore
Academic Press. London. 648 pgs.
(ISBN: 0-12-742961-1)