I ascertain the wildlife fauna in different habitats, i.e., mangrove forests, mudflats, freshwater wetlands, dry lands, scrub lands, forests, riverine forest, and waterlogged areas. In addition, I also examine the effects of micro-climatic, habitat characteristics, and human disturbance on fauna species inhabit in heterogeneous habitats. Furthermore, I used birds as bio-indicators to examine the current status of habitat such as vegetation structure and composition, occurrence of food resources, effects of human disturbance, climate change, illegal hunting, and pollution etc. on the fauna and flora. I have published 30 research articles in the cited index and an impact factor journal, 5 research articles in proceedings, 8 book chapters and one book on wetland birds.