Ang Trapeang Thmor (ATT) is one of the top bird watching sites close to Siem Reap. It is the feeding ground for the Sarus Crane (Grus Antigone) in the dry season. About 200 bird species have been spotted at the reserve, these include the Spotted Wood-owl, Oriental Plover, Greater Spotted Eagle, Comb Duck, Black Kite, Milky Stork, Painted Stork and the Black-necked Stork. It is also a natural habitat for the Eld’s Deer.
Ang Trapeang Thmor Protected Landscape was created by Royal Decree in the year 2000 covers an area of 12,650 hectares of wetlands, grassland, dry dipterocarp forest, bamboo forest, and the open water surface.