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    Description

    Red Squirrels (Tamiasciurus hudsonicus) routinely breed biannually in eastern North America, but normally breed once annually in western North America. However, a postpartum estrus resulting in two breeding seasons per year has been documented within the maritime region of British Columbia. I present two accounts of Red Squirrel behavior suggestive of autumn breeding in Red Squirrels in western Montana, and supporting evidence from the literature suggesting that late-season breeding resulting from a postpartum estrus may occur periodically in Red Squirrels within the Rocky Mountains.

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    Citation

    Pearson, Dean E. 2000. Evidence of autumn breeding in red squirrels, Tamiasciurus hudsonicus, in western Montana. Canadian Field‐Naturalist. 114(4): 703‐704.

    Keywords

    breeding behavior, Montana, Red Squirrel, Tamiasciurus hudsonicus

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https://www.fs.usda.gov/treesearch/pubs/49937