all in Colorado except one small group of birds just across the state line in Utah. By far the largest group lived in the Gunnison basin. In the late 1970s, Braun estimates there were as many as ...

By the numbers: In the past 50 years, Colorado species like the mountain plover and Baird's sparrow have seen population ...

Spring’s arrival and warming temperatures will soon bring flocks of people outdoors in Colorado – and feathered friends will follow suit. Seasonal bird migration is about to ramp up ...

Colorado has 1,916 operating wind turbines, placing it eighth in the nation for turbine numbers. Although those turbines accounted for only a small percentage of bird deaths annually, Jason ...