Let’s keep the fun of National Wildlife Refuge Week going with this awesome elk at Charles M. Russell National Wildlife Refuge in Montana. During the fall rut, bull elk bellow out a series of grunts and whistles called a bugle. It’s a call to combat. In the mating season, challengers bugle to dominant elks, announcing a duel for the right to mate. This is just one of the many terrific sight and sounds you’ll find when you explore the outdoors. Photo by Somesh Nagthan (www.sharetheexperience.org).

A purple and pink winter sunrise paints the sky at Charles M. Russell National Wildlife Refuge in Montana. It’s a scene Charles M. Russell would have enjoyed. The refuge was named in recognition of this colorful western artist who often portrayed the refuge’s landscape in his paintings. Along with the stunning scenery and amazing wildlife, the refuge boasts a fantastic history that includes mountain men, Native Americans and dinosaurs. Photo by Mary Jo Hill, U.S. Fish and Wildlife Service.