In 2006, the American Ornithologists’ Union (AOU) took a closer look at the western bird known as the “blue grouse” and reclassified it into two separate species: the sooty grouse and the dusky grouse ...
In the early 1800s, as the expedition led by Lewis and Clark and guided by Sacagawea pushed through the Rocky Mountains, they found and described dusky grouse, Dendragapus obscurus. In the Cascade ...
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