June
![White-tailed fawn lying in grass](/gnf/conservation/images/natural-history/natural-history-calendar-tmb-jun.jpg)
White-tailed fawns are being born, American marten breeding season begins...
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July
![Bison](/gnf/conservation/images/natural-history/natural-history-calendar-tmb-jul.jpg)
Bison rut intensifies from late July into August, long-tailed weasel breeding season begins...
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August
![Big brown bat flying](/gnf/conservation/images/natural-history/natural-history-calendar-tmb-aug.jpg)
Big brown bats begin dispersal from summer roosts, white-tailed fawn wean...
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