Elk Lying Down to Sleep Surrounded With Herd Grazing In The Grassland In The Rocky Mountain National Park, Colorado, USA

wapiti cervus canadensis elk grazing deer wildlife grazers fauna cervidae ruminant horned herd mammal national park herbivore grassland nat geo colorado short tail rocky mountain national geographic female wild meadow bull cow north america habitat nature lick closeup grassfield close up bush standing grass behavior gang field down lying tired natural mountain lay lie rest sleepy laying