There is not shortage of bison in Yellowstone. This page shows only bison photos. Above bison just stepped on the bank after crossing the Nez Perce creek. [310mm, 1/800s, F5.6]
The bison in Yellowstone like to use the road and they travel the road in a leisurely pace with total disrespect of traffic rules. [400mm, 1/2000s, F5.0]
This photo was shot in the Lower Geyser Basin. The bison is crossing the Firehole river. [330mm, 1/1000s, F5.0]
This bison just got up after rolling in the dirt. Great photo for a nostalgic rendering. [330mm, 1/1000s, F5.0]