Nearly 50% of India’s birds are registered in its North-Western habitats dominated by Corbett Tiger Reserve, Nainital and their peripheral fringes. They include 35 raptors excluding owls.
Nearly 53% birds are found in its North Eastern habitats comprising Kaziranga, Nameri, Manas and adjoining areas. They include 36 raptors excluding owls.
Both these areas account for 112 raptors, 221 wetland dependent birds, 450 birds that require grassland/scrub habitats and others (about 480) which dwell upon forests, hills, tree-branches/trunks etc (out of 1,263 species recorded up to 2017).
One third of birds are recorded in Keoladeo National Park, Bharatpur. Almost the same number is registered in Ranns of Kutchh and Gir.