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Avifaunal diversity and conservation status of Okhla Bird Sanctuary, Noida, Uttar Pradesh, India

Okhla Bird Sanctuary, subside in the Gangetic plains falls in the semi-arid region. The sanctuary consists of a deep-water area, reed bed area, ponds, and shallow vegetated area that supports rich habitat for water and terrestrial birds. It is known for the occurrence of large congregations of winter migratory birds including some rare and endangered species. Present chapter is based on the published records and the observations carried by authors during 2018-19. Total 302 species have been reported so far. Four critically endangered species viz; White-rumped Vulture (Gyps bengalensis), Indian Vulture (Gyps indicus), Baer’s Pochard (Aythya baeri), and Sociable Lapwing (Vanellus gregarious) have been reported from this area. Apart from this, three endangered species, nine vulnerable species, and seventeen near threatened species occur in this area. Based on the field observations and earlier discussion with the officials of the sanctuary, it has been observed that during the past one and half decades the population and species density of avifauna is decreased and some of the species which were frequently seen, are becoming rare. The wetland is facing conservation problems owing to anthropogenic pressure and water pollution. Thus, in the catchment area and surroundings of water bodies, dumping of wastes (such as garbage, sewages, food wastes, and polyethylene bags) should be banned and stopped by law enforcement.