Greater sage grouse
once occupied much of the American West with their pre-livestock population estimated at 2 million individuals. By the early 21st century that population was estimated at 140,000 and declining. The half million-acre Green Mountain Common Allotment in central Wyoming contains some of the best sage grouse habitat remaining in the United States. Yet even here the environmental conditions that support grouse populations continue to degrade from impacts of coalbed methane development
The allotment is also home to several herds of native wildlife: pronghorn antelope, mule deer, elk, and moose. According to the BLM, mule deer herds, especially, have been low in recent years due to hot dry weather, low vegetative production and heavy domestic livestock use that has resulted in poor habitat conditions.
My photos and observations here stem from a visit to the allotment in mid-September 2001.