For the more daring tourist operating from Hambantota.  It is a separate park though contiguous with Yala.  It was known till recently as the Yala East National Park.  The trip involves crossing the river and many fords on the way and therefore permission to visit from Yala can be obtained only if at least two four wheel drive vehicles undertake the trip together.  It is famous for its avifauna, especially its large flocks of migratory waterfowl and wading birds.  The park can be more easily reached through Pottuvil.

Sri Lanka records more than 430 bird species comprising endemic, resident and migrant birds. Of these, the bird watchers are able to watch over 200 species easily. The wide variety of birds found in the numerous wildlife parks of Sri Lanka makes the tropical island a prime bird watching destination in the world. The Kumana National Park is the most important and most popular bird sanctuary in Sri Lanka. Kumana birdlife supported by Some 20 lagoons and tank is an ornithologist’s paradise. During April–July, tens of thousands of birds migrate to the Kumana swamp area annually nearly 255 species of birds have been recorded in the National Park. Regular sightings of birds include pelicans, painted storks, spoonbills, white ibis, herons, egrets and hundreds of little cormorants. The very rare black-necked stork has also been spotted at the swamp.

Among the breeding inhabitants of the Kumana villu are the rare species such as Black-necked Stork, Lesser Adjutant, Eurasian Spoonbill, and Great Thick-knee are breeding inhabitants of the Kumana villu.

The bird species migrate here in large flocks. Asian Open bill, White-breasted Water hen, Lesser Whistling Glossy Ibis, Purple Heron, Great Egret, Indian Pond Heron, Weathercock, Purple Swamp hen, Duck Black-crowned Night Heron, Intermediate Egret, Little Egret, Spot-billed Pelican, Indian Cormorant, Little Cormorant, Common Moorhen, and Little Grebe are the bird species migrate here in large flocks.