A male sage grouse tries to impress a group of hens, at left, near the base of the Rattlesnake Range in southwest Natrona County, Wyo., in 2014. (Alan Rogers/The Casper Star-Tribune via AP, File)

A male sage grouse tries to impress a group of hens, at left, near the base of the Rattlesnake Range in southwest Natrona County, Wyo., in 2014. (Alan Rogers/The Casper Star-Tribune via AP, File)