http://oldwww.wii.gov.in/nwd_birds/bhi.htm
Information on Bhitarkanika Wildlife Sanctuary - Biounit 08B Tot.Area 527 km2 Upperalt. 50 m. Rainfall 1700 m.m.
Key to the Checklist - In the column titled field_status, R = widespread resident r = very local resident V = vagrant W = widespread winter visitor w = sparse winter visitor ? = status uncertain rl = introduced resident P = widespread migrant p = sparse migrant (ex)= extinct nT = near threatened E = endangered
Checklist Stats - Number of species: 174
Author quoted references for the checklist - Pandav, Bivash, 1996. Birds of Bhitarkanika Mangroves, eastern India. Forktail 12: 9-20.
For more on Bhitarkanika Wildlife Sanctuary - http://en.wikipedia.org/wiki/Bhitarkanika_National_Park