The sanctuary was formed as a result of the construction of the Okhla Barrage across the Yamuna River.
It is one of the 466 Important Bird Areas (IBAs) in India identified by BirdLife International.
The wetland acts as an ecological corridor between the urban sprawl of Delhi and the developing sectors of Noida.
The sanctuary's ecosystem is heavily influenced by the seasonal water release cycles from the Okhla Barrage.
Rare species like the Baer's pochard and Pallas's fish eagle have been recorded here during peak migration.
The park contains a diverse range of plant species, with at least 180 species of herbs and shrubs documented.
It remains a rare urban wetland site that supports both resident and long-distance migratory species simultaneously.
Okhla Bird Sanctuary is a 3.5-square-kilometer wetland situated at the point where the Yamuna River enters Uttar Pradesh from Delhi. It is recognized as one of India's Important Bird Areas, supporting over 300 bird species including migratory waterfowl. The habitat is defined by its artificial lake, created by the Okhla Barrage, and surrounding marshes. It serves as a critical stopover for birds migrating along the Central Asian Flyway. The sanctuary hosts diverse flora including aquatic vegetation and patches of dry deciduous forest. Visitors can explore via a network of pathways that provide views of the riverbed and mudflats. It is a significant site for both amateur and professional ornithologists.
The elevated viewing points near the barrage gates overlooking the central lake area.
Bring high-quality binoculars or a camera with a telephoto lens to observe birds on the mudflats.
Wear muted, earthy-colored clothing to avoid startling the bird populations.
Keep a safe distance from the water's edge to avoid disturbing nesting sites in the reeds.
Avoid visiting during the peak heat of summer afternoons, as bird activity is minimal and shade is limited.
Maintain silence, avoid littering, do not feed the wildlife, and remain on designated trails at all times.
