Winter Bison Panorama
Rocky Mountain Arsenal National Wildlife Refuge, Colorado
Temperatures well below zero suit bison just fine - they've evolved to handle the extreme cold and heat of the shortgrass prairie. The RMA herd has grown to around 50 animals and I count 33 stretched out in this image on a morning when the wind chill was -31F.
larger image here
* Because this is a long panorama, please contact me for special print pricing. Photo © copyright by Dave Showalter.