This park is best visited in winters, when a large number of migratory birds come here. In the old map and district gazetteer of Gurgaon district, this area is shown as marshy land having a ‘salt pan’ where water accumulates during rains and dries our during summer. A number of organisms like crustaceans, fish and insects thrive during floods which attract a number of birds to this area. Its sanctuary potential was first identified by an enthusiastic bird watcher, Mr. Peter Jackson. He convinced Mrs. Indira Gandhi, the then Prime Minister of India, of the need for giving protection to this area keeping in view it’s importance and potential, the area covering 359 acres was declared a bird sanctuary in 1971 and was upgraded to the status of National Park in 1991 by Haryana Government.
