Details of transects laid along the elevation gradient of Sikkim, Eastern Himalaya.

TrSDF - Tropical semi-deciduous forests; TrMBF - Tropical moist and broad-leaved forests; TBF - Temperate broad-leaved forests; TCF - Temperate coniferous forests; SAV - Sub Alpine vegetation and AV - Alpine vegetation. Effort - No. of times each transect was repeated for sampling birds.