COMPARISON OF WINTER TROPHIC STRATEGIES BETWEEN RED DEER AND ROE DEER IN DAILING REGION Population status and dynamic trends of Amur tiger‘s prey in Eastern Wandashan Mountain, Heilongjiang Province Winter bed-site selection by roe deer (Capreolus capreolus) in Huangnihe Nature Reserve Effects of ecological factors on the population genetic diversity in roe deer (Capreolus Pygargus) Prey biomass of the Amur tiger (Panthera tigris altaica) in the eastern Wanda Mountains of Heilongjiang Province, China