Photo: Bison Rule the Road at Yellowstone

Bison walking on a Yellowstone street
credit: Sam McMillan / Flickr

Our photo of the day comes from Yellowstone National Park. Well hello beautiful bison, big and small! Sam McMillan recently took this shot at Yellowstone. He writes: "Early morning Bison road Jam! The Bison control the roads in Yellowstone National Park. Traffic can get backed up, sometimes for miles, as bison refuse to move or, more often, drivers refuse to pass them. All it takes is one driver who’s too nervous to bring their car close to a lumbering beast—they don’t want to scare the animal or more often, they’re worried the bison will ram their vehicle—which means you may not be going anywhere for awhile." Would you like to see your nature photo featured as the TreeHugger photo of the day? Join TreeHugger’s Reader Photo Pool on Flickr and add your pictures to the group. Alternatively, send it to with "photo of the day" in the subject line.