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Influence of hair loss syndrome on black‐tailed deer fawn survival RH McCoy, SL Murphie, M Szykman Gunther… - The Journal of Wildlife …, 2014

Washington Deer Population, Management News and Information Archive

Influence of hair loss syndrome on black‐tailed deer fawn survival RH McCoy, SL Murphie, M Szykman Gunther… - The Journal of Wildlife …, 2014
... Recent declines in black-tailed deer populations in Washington have been attributed partly to low recruitment... we recorded 129 mortalities; predation was the leading cause (74%). Mountain lions (Puma concolor) and bobcats (Lynx rufus) were the most common predators. The survival rate to 50 weeks was 0.33 ...  We conclude that fawn mortality during the first 9 weeks followed by a significant increase in winter mortality, exacerbated by HLS [hair loss syndrome], combine to limit black-tailed deer population growth. Inherent nutritional limitations in summer forage may have influenced survival of many fawns, pre-disposing them to mortality during the summer and winter. 


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