Introduction: The Mizoram-Manipur-Kachin Rain Forests [IM0131] has the highest bird species richness of all ecoregions that are completely within the Indo-Pacific region. (The only ecoregions that have more birds are the Northern Indochina Subtropical Forests [IM0137] and South China-Vietnam Subtropical Evergreen Forests [IM0149] that extend into China.) Except the pioneering explorations of Kingdon-Ward (1921, 1930, 1952) and Burma Wildlife Survey made by Oliver Milton and Richard D. Estes (1963), few scientific surveys have been made in this ecoregion. Once exception has been the recent Wildlife Conservation Society (WCS) and Smithsonian Institution?s reptile survey in northwestern Myanmar. Therefore these rugged mountains? biodiversity remains largely unknown... Description: Location and General Description This large ecoregion represents the semi-evergreen submontane rain forests that extend from the midranges of the Arakan Yoma and Chin Hills north into the Chittagong Hills of Bangladesh, the Mizo and Naga hills along the Myanmar-Indian border, and into the northern hills of Myanmar. It divides the Brahmaputra and Irrawaddy valleys, through which two of Asia?s largest rivers flow. Some areas in this ecoregion receive more than 2,000 mm of rainfall annually from the monsoons that sweep in from the Bay of Bengal..."