Thale Noi-Patthalung is a swamp area, one of the largest freshwater lakes in southern Thailand, classified as a 'Non-Hunting Area' and protected by the Department of Forestry. Bird-watching is mainly done from boats. Many water birds can be seen at this site including reported sightings of Painted Storks and Black-headed Ibis.
Thale Noi Waterfowl Reserveis the largest waterfowl reserve in Thailand. It can be reached via Highway No. 4048 from Amphoe Muang to Amphoe Khuan Khanun and to Thale Noi, for a total distance of 32 kilometers. The road is paved asphalt all the way. The reserve is the responsibility of the Royal Forestry Department and covers 450 square kilometers, divided into 422 square kilometers of land (94%) and 28 square kilometers of water (6%), or Thalae Noi.