==References==* "Birds of India" by Grimmett, Inskipp and Inskipp, ISBN 0-691-04910-6* "Seabirds: An Identification Guide" by Harrison, Peter ISBN 0-7470-1410-8==Gallery==
* "Birds of India" by Grimmett, Inskipp and Inskipp, ISBN 0-691-04910-6* "Seabirds: An Identification Guide" by Harrison, Peter ISBN 0-7470-1410-8