bison in yellowstone national park during the summer mating season

august bellow bellowing bison block brush buffalo bull calf car cars charge charging cow crossing dog eat eating feed feeding flehmen grass graze grazing group haiden hayden haydn herd highway hunt hunting jam july lamar landscape mating mountain mountains mud national park prairie ranch ranching red river road roadblock rub rubbing rut sage scenery scenic season smell smelling sniff sniffing states stop street summer through traffic tree trees united valley wade wading wallow wallowing west western wildlife wyoming wyomings yellowstone