[1] Grimmett, R., Inskipp, C. and Inskipp, T. (1998) Pocket Guide to the Birds of Indian Subcontinent. Oxford University Press, Mumbai.
[2] Sharma, I.K. (1982) Adverse Effects of Air, Water and Soil Pollutions on Flora and Fauna of Towns and Villages of Western Rajasthan. Symposium on Environment Consciousness, Problems of Pollution and Conservation in Rajasthan, 1-3 October 1982.
[3] Zoological Survey of India, Contribution to the Faunal Diversity of India, Aves.
[4] Padmavati, A., Alexandar, R. and Anbarashan, M. (2010) Our Nature. 8, 247-253.
[5] Bhattacharjee, P.C. and Hazarika, B.C. (1985) Roosting Sites and Roosting Birds at Gauhati Muncipal Area. Second Intenational Symposium on Life Sciences, 14-16 November 1985, NEHU Shillong.
[6] http://en.wikipedia.org/wiki/Digha
[7] Ali, S. (2012) The Books of Indian Birds. 13th Edition, Oxford University Press, Delhi.
[8] Ali, S. and Ripely, S.D. (1987) Compact Handbook of Birds of India and Pakistan. Oxford University Press, Bombay.
[9] Balachandran, S., et al. (2009) Bird Atlas of Chilka. Bombay Natural History Socity, India.