Next the wildlife biologist turned photographer followed a 150-mile mule deer migration. Then Riis and ecologist Arthur Middleton spent two years documenting elk migrations, for which they were ...

In 2012, a photographer captured a shot of a black mule deer doe lying with other does of the traditional brownish-gray color. Two other photos of a black mule deer doe — one alone and one with ...

Editor’s note: A version of this post was first published on March 30, 2022. The desert mule deer is a common sight in the Trans-Pecos region of west Texas, but when wildlife biologists ...