The presence of the rare bird species Black-headed Ibis in large numbers in the salt pans (uppul areas) of Thoothukudi district has drawn significant attention from bird watchers and environmental enthusiasts.
The Black-headed Ibis, characterised by its elegant white plumage, black head, and long curved beak, is listed as a "Near Threatened" species in Asia. It is predominantly found in wetlands, riverbanks and salt pans, where it feeds on fish, insects and other small aquatic creatures.