Birds

Here, Coloradan Editor Eric Gershon speaks with CU professor Nathan Pieplow, author of the Peterson’s Field Guide to Bird Sounds of Western North America (forthcoming in April).

Colorado is a great place to see — and hear — birds: Some 500 species have been observed here, more than in all but a handful of other states.

A CU biologist and her students invent new ways to trace evolution in action.