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Eates,KR (1938) The status of the Koel (Eudynamys scolopaceus L.) in Sind. J. Bombay Nat. Hist. Soc. 40(2):328.

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.. ISBN 0-691-04910-6

Jose,TV (1980) Koels. Newsletter for Birdwatchers . 20(4), 17.

Menon, G.K.; Shah, R.V. (1979) Adaptive features in juvenal plumage pattern of the Indian Koel Eudynamys scolopacea: host mimesis and hawk-pattern. Journal of the Yamashina Institute for Ornithology 11(2):87-95

Neelakantan,KK (1980) The breeding of the Indian Koel Eudynamys scolopacea. Newsletter for Birdwatchers . 20(1):7.

Parasharya,BM (1985) Comments on eye color in the Koel Eudynamys scolopacea. Newsletter for Birdwatchers . 25(1-2), 11-12.

Ray-Chaudhuri, R. (1967) Mitotic and meiotic chromosomes of the koel Eudynamys scolopacea scolopacea. Nucleus 10: 179-189. (Study notes that the W chromosome is the 6th largest one and has the centromere in a subterminal position.)

Ryall C (2003) Mimicry of a crow chick by an Asian koel Eudynamys scolopacea as a defence against attack by house crows Corvus splendens. J. Bombay Nat. Hist. Soc. 100(1):136-137

Santharam,V (1979) Crows feeding young koel. Newsletter for Birdwatchers . 19(7), 4.

Sarkar AK, Maitra SK, Midya T. (1976) Histological, histochemical and biochemical effects of cadmium chloride in female koel (Eudynamys scolopacea). Acta Histochem. 57(2):205-11.

Sarkar AK, Maitra SK, Midya T. (1977) Effects of reserpine on female reproductive organs of the Indian koel Eudynamys scolopacea scolopacea (L). Indian J Exp Biol.15(5):349-51.