Grimmett, Richard; Inskipp, Carol, Inskipp, Tim & Byers, Clive (1999): Birds of India, Pakistan, Nepal, Bangladesh, Bhutan, Sri Lanka, and the Maldives. Princeton University Press, Princeton, N.J.. ISBN0-691-04910-6
Rasmussen, P.C., and J.C. Anderton. 2005. Birds of South Asia. The Ripley guide. Volume 2: attributes and status. Smithsonian Institution and Lynx Edicions, Washington D.C. and Barcelona.
Grimmett, Richard; Inskipp, Carol & Inskipp, Tim (2011) : Birds of the Indian Subcontinent, second edition. Oxford University Press. ISBN0-19-807722-X