Barlow, Clive and Tim Wacher. 1997.
A field guide to birds of the Gambia and Senegal
Yale University Press. New Haven and London. 400 pgs.
(ISBN: 0-300-07454-9)

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)

Etchécopar, R. D. and François Hüe. 1967.
The Birds of North Africa from the Canary Islands to the Red Sea
Translated to English from French by P. A. D. Hollom.
Oliver & Boyd. Edinburgh and London. 612 pgs.

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

Langrand, Olivier. 1990.
Guide to the Birds of Madagascar
Translated to English from French by Willem Daniels
Yale University Press. New Haven & London. 364 pgs.
(ISBN: 0-300-04310-4, LC: QL692.M28L3613 1990)

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

Zimmerman, Dale A., Donald A. Turner and David J. Pearson. 1996.
Birds of Kenya and Northern Tanzania
Princeton University Press. Princeton, New Jersey. 740 pgs.
(ISBN: 0-691-02658-0)