Prey biomass of the Amur tiger (Panthera tigris altaica) in the eastern Wanda Mountains of Heilongjiang Province, China Home range and fidelity of Sichuan takin Summer diets of Sympatric Blue Sheep (Pseudois nayaur) and Red Deer (Cervus elaphus alxaicus) in the Helan Mountains, China Factors affecting the home range of reintroduced Equus przewalskii in the Mt. Kalamaili Ungulate Nature Reserve