Located at a distance of 46 kms from Delhi, Sultanpur Bird Sanctuary is a haven to a variety of domestic and migratory birds. Artificial mound, have turned into a green glade. The marsh has been converted into a water body. And with the years, hundreds of species of migratory birds have winged in to stay. Winter brings in birds from as far as Siberia. Flock of geese from Europe wing in too. The local birds flap in. The bird population include darters, egrets shovellers, gadwell and geese dominate. Teals, kingfishers, lapwings, sandpipers demoiselle cranes and such like water birds nestle in. Over 100 species have been identified here.
The 150 acre jheel (lake) is filled by thousands of ducksruddy shelduck, mallard, pochard, shoveller, teals of all kinds, gadwall, greylag and bar-headed geese etc. From far-off lands come the flamingoes, pelicans and demoiselle cranes. Flying in from neighbourhood areas are painted storks, spoonbills, white ibises, herons, large cormorants, egrets, red wattled lapwings and plovers.
September to March is the best time to visit.