The Centre notified the area around the Parvati-Arga Bird Sanctuary in Gonda district, Uttar Pradesh, as an Eco-Sensitive Zone under the Environment (Protection) Act, 1986. The sanctuary covers about 1,084 hectares and hosts resident birds as well as winter migrants from Central Asia and Tibet. An Eco-Sensitive Zone is a buffer around a protected area where activities are regulated to protect wildlife and habitats.