Clark's nutcracker
The area surrounding Marmarth in southern Theodore Roosevelt National Park is home to a large variety of wildlife species, including the pronghorn antelope, black-tailed prairie dog, feral horse, bison, bighorn sheep, elk, white-tailed deer, mule deer, wild turkey, bull snake, prairie rattlesnake, and avifauna such as the ferruginous hawk, golden eagle, greater sage-grouse, mountain bluebird, Brewer's sparrow, burrowing owl, lark bunting, chestnut-collared longspur, long-billed curlew, red-tailed hawk, common poorwill, chickadee, spotted towhee, lazuli bunting, and Clark's nutcracker.