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Ali, S. & S.D. Ripley (1987): Compact Handbook of the Birds of India and Pakistan together with those of Bangladesh, Nepal, Bhutan and Sri Lanka. 2nd Edition. Oxford University Press, Delhi.
Ferguson-Lees, J. & D.A. Christie (2001): Raptors of the World. Christopher Helm, London.
Grimmett, R., C. Inskipp & T. Inskipp (2011): Birds of the Indian Subcontinent. 2nd edn. Oxford University Press, UK.
King, B., M. Woodcock & E.C. Dickinson (1983): A Field Guide to the Birds of South-East Asia. Collins, London.
Manakadan, R., J.C. Daniel & Nikhil Bhopale (2011): Birds of the Indian Subcontinent – A Field Guide. Bombay Natural History Society, Mumbai.
Rasmussen, P.C. & J.C. Anderton (2012): Birds of South Asia: The Ripley Guide. Vols 1 and 2. 2nd edn. National Museum of Natural History – Smithsonian Institution, Michigan State University, and Lynx Edicions, Washington, D.C., Michigan and Barcelona.