East Himalayan deciduous forests - an ecoregion in Bhutan, India and Nepal, which is located at the middle altitudes of the eastern part of the Himalayan ridge.
The ecoregion covers an area of 83,100 km², an area of temperate deciduous forests located at an altitude of about 2,000 to 3,000 meters. It stretches from the Kali Gandaki River in Nepal to the Indian state of Sikkim, West Bengal, Bhutan, and the Indian state of Arunachal Pradesh.
At lower elevations, deciduous forests transition into Himalayan subtropical broadleaf forests and Himalayan subtropical pine forests. At high altitudes - in the eastern Himalayan subalpine coniferous forests.
The East Himalayan deciduous forests are distinguished by a high diversity of flora. Of arboriflora, species of the genera oak and rhododendron are especially numerous. The ecoregion includes two types of forests: evergreen and deciduous.
Evergreen forests are made up of various types of oak trees, mainly of tiled oak (Quercus lamellosa), together with Lithocarpus pachyphylla, tree rhododendron (Rhododendron arboreum), Rhododendron falconeri, Rhododendron thomsonii, Michelia excelsa, Michelia cathcartii, exbusklandia poplar (Bucklandia populnea), Symplocos cochinchinensis, as well as species of the genera Magnolia (Magnolia), cinnamon (Cinnamomum) and mahil (Machilus).
Deciduous forests are dominated by Campbell's maple (Acer campbellii), walnut (Juglans regia), Nepalese alder (Alnus nepalensis), alder birch (Betula alnoides), useful birch (Betula utilis) and Echinocarpus dasycarpus.
Endemic and rare species of mammals living in this region: golden langur (Trachypithecus geei), Hodgson's flying squirrel (Petaurista magnificus), Assamese flying squirrel (Biswamoyopterus biswasi), Niviventer brahma, tiger (Panthera tigris), little panda (Ailurus fulgens), takin (Budorcas taxicolor), Sumatran serau (Capricornis sumatraensis), Sikkim bat (Myotis sicarius), mountain rhesus (Macaca assamensis), bear macaque (Macaca arctoides), Red Wolf (Cuon alpinus), white-striped weasel (Mustela strigidorsa), Pardofelis nebulosa, Irrawaddy squirrel (Callosciurus pygerythrus).
Bird species: red-breasted partridge (Arborophila mandellii), Nepalese Sibia (Actinodura nipalensis), Alcippe ludlowi, Brachypteryx hyperythra, yellow-winged shrub (Garrulax elliotii), gray-headed sutora (Paradoxornis gularis), Pnoepyga immaculata, gray-headed prinya (Prinia cinereocapilla), Spelaeornis badeigularis, red-throated wren bubbler (Spelaeornis caudatus), Stachyris oglei, spiny thrushed thymelia (Turdoides nipalensis), Nepali kalao (Aceros nipalensis), white-tailed monal (Lophophorus sclateri), white-bellied heron (Ardea insignis), gray-bellied tragopan (Tragopan blythii), pink-tailed Asian trogon (Harpactes wardi).