The mangrove ecosystem is known to play important role as nursery for a variety of marine and freshwater organisms. They present a much diverse structural habitat than most coastal ecosystems and harbour a great variety of bird life (Samant, 1985). Though the birds are not exactly aquatic creatures, a large number of birds are dependent solely on the aquatic environment for their survival (Mandal et al., 2001), and mostly use mangrove ecosystem for feeding, roosting or transit purpose.