COLORADO I In the 1970s, biologist Clait Braun noticed something different about the sage grouse in western Colorado’s Gunnison River Basin. Their wings and bodies seemed smaller than those of the greater sage grouse, which strut through sagebrush across millions of acres in 11 Western states.
More research revealed more differences: The Gunnison males pop the yellow air sacs on their chests more frequently during their exuberant mating rituals and wag their butts at its…
