Jaldapara is exceptionally rich in avifauna because of varied terrain, mosaic of vegetation and rich insect life. More than 240 species of birds are found in variety of habitat- Grassland, water bodies, woodland. The varied tree forests and rich shrub growth on the forest floor provide ideal setting for many woodland birds, such as Green Pigeons, Hornbills, Barbets, Parakeets, Woodpeckers, Cuckoos, Orioles, Drongos, Babblers, 
Thrushes etc. Brahminy ducks, whistling teals and Goosanders are winter visitors.The most common water birds are the large and little cormorant, Indian Shag, Darter, Egrets, Lesser Adjutant Stork, Pied Wagtail, Spur Winged Lapwing, Moorhen, White Breasted Waterhen etc
The night hunters in Jaldapara are the owls and the nightjars. Crested Serpent Eagle is common raptorial bird. The other main hunter birds are Palla’s Fishing Eagle, Pariah Kite, Pied Harrier, common Buzzard, the Kestrel, Sparrow Hawk etc. A variety of birds, typical of grassland and open country, can be seen form watch towers viz. Doves, 
Bee-eaters, Rollers, Hoopoe, Shrikes, Harks, Hill Mynas, Bulbuls, Rollers Finches. Call of the Red jungle fowl is as common as the musical sound of crickets. Bengal Florican, Black Partridge, Shaheen Falcon, Great Pied Hornbills, Forest Eagle Owl, Large Green-billed Malkoha, and King Vulture are the endangered bird species. Some fortunate visitors can see the Peacock displaying its full array of feathers during the breeding season.