Meanwhile, as the elk people ready for their rut, the mating season of the bison people continues. Here a mature bull enjoys a dust wallow roll—a frequent pleasure during their mating season. The bison rut is well past its peak but still there will be rigorous days of collective excitement and sometimes violent episodes between bulls for a while yet. Until recently, late in this year's calving season, a few little tardy orange calves were being born, the late fruit of last year's rut.
Meanwhile, as the elk people ready for their rut, the mating season of the bison people continues. Here a mature bull enjoys a dust wallow roll—a frequent pleasure during their mating season. The bison rut is well past its peak but still there will be rigorous days of collective excitement and sometimes violent episodes between bulls for a while yet. Until recently, late in this year's calving season, a few little tardy orange calves were being born, the late fruit of last year's rut.