Bison amour in Yellowstone’'s Hayden Valley

The Yellowstone River meanders gently through the soft, verdant grasslands in Hayden Valley. Wildflowers color the hillsides and cumulus clouds lazily drift overhead. This pastoral setting is the perfect place for romance—even for bison.

Approximately 3,000 bison call Yellowstone home, and in late July through August every year they journey to the two primary breeding grounds in the park, one of which is scenic Hayden Valley. Bison bulls, who remain solitary or in small bachelor herds for most of the year, seek out females during the rut by grunting, bellowing, wallowing, and fighting with the competition. 

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