Populations decreased even in the least disturbed regions, sparking concern about the broader effects of human activity and climate forces.

Last month’s Cheyenne Audubon guest speaker was Jake Courkamp, a research scientist in the Restoration Ecology Lab at Colorado State University who studies the control of cheatgrass.

Thank you for reporting this station. We will review the data in question. You are about to report this weather station for bad data. Please select the information that is incorrect.