The Bird Sanctary in Kalametiya was declared a wildlife sanctuary in 1938 and this was abolished in 1946. This was once again declared a sanctuary in 1984, The Sanctuary includes the Lunama and Kalamatiya lagoons. This is a haven for many species of resident as well as migrant water birds including many species of migrant ducks. There are four nationally threatened birds found within the Sanctuary – Indian Reef Heron, Glossy Ibis, Sri Lankan Jungle Fowl and Black-capped Purple Kingfisher with Jungle Fowl being the only endemic species. A large number of plants have been recorded within the Sanctuary.