Growing calves

Running at top speed is now a favorite calf pastime. 
 All of the calves have now lost their reddish brown fur coat and turned the dark brown of their parents.  Aside from grazing and nursing, the calves number one activity is running as fast as they can.  They seem to derive intense enjoyment from this activity and often chase each other. 
 Though the calves are still quite small, the herd has once again started the mating rituals in preparation for a new batch of calves next year.
 Unlike many species of domestic livestock, bison mating is much more involved with each mating requiring several days of a bulls attention. 

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