Female Black Bears become sexually mature at three-and-a-half years of age. They breed in June and give birth in January or February (delayed implantation). Black Bears have a 2-year reproduction cycle: the cubs remain in the custody of their mother for roughly a year and a half, during which time the mother doesn’t mate. In May or June of the year following their birth, when they are 16 or 17 months old, the yearlings become independent and go off on their own — – just prior to black bear mating season. (Thanks to Jill and Bryan Marquard for photo op.)
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