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Grimmett, R., Inskipp C. and Inskipp, T. (1998) Birds of the Indian Subcontinent. A. & C. Black/Christopher Helm London.
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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Okhla Bird Sanctuary (India). Downloaded from
https://datazone.birdlife.org/site/factsheet/okhla-bird-sanctuary-iba-india on 23/12/2024.