Historic Survival Rates and Cause-Specific Mortality for Columbian Black-Tailed Deer in Southwest Oregon [PDF] KA Groot - 2015

Oregon Deer Population, Management News and Information Archive

... In contrast with other Odocoileus species, Columbian black-tailed deer (Odocoileus hemionus columbianus) population dynamics are not well understood throughout the species’ range.  Concerns over apparent long-term population declines have prompted efforts to fill basic knowledge gaps including estimates of vital rates (fecundity, recruitment and survival) and causespecific mortality...  2-year-old males had over twice the
cumulative risk of legal harvest with 22% of this age class killed by hunters during the general rifle season . ...    harvest may have had an additive effect and been the primary cause of low survival rates observed for males....

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