Explanation:

Sultanpur Bird Sanctuary is very popular national park located in Gurgaon district in Haryana State. Sultanpur is located 40 kilometres (25 mi) from Dhaula Kuan in Delhi and 15 kilometres (9.3 mi) from Gurgaon on the Gurgaon – Farrukhnagar Road. This Bird Sanctuary, ideal for birding and bird watchers, is best visited in winters when a large number of migratory birds come here.Haryana government has carried out a number of development works at Sultanpur Bird Sanctuary like construction of mounds, widening of paths, four tube wells have also been dug. Efforts are being made to improve vegetation in area by planting more trees, which are popular with the birds like ficus spp. Acacia Nilotica, Acacia Tortilis, Beris and Neem etc.

Among approximately 1,800 migratory bird species out of total 10,000 species of birds in the world, nearly 370 species migrate to India due to seasonal changes, including 175 long-distance migration species that use the Central Asian Flyway route which also include Amur falcons, Egyptian vultures, plovers, ducks, storks, ibises, flamingoes, jacanas, pochards and sociable lapwing.