A mountain chickadee peers down from its perch in a ponderosa pine. Click here for larger image. Photo by Jeff Mitton. As the most recent glaciers subsided, ponderosa pines move north from their ...

As the most recent glaciers subsided, ponderosa pines move north from their southern refuges. But it was not a solitary journey, for the pines brought along a community of dependent species. Ponderosa ...

Wet snow pelts my face and pulls against my skis as I climb above 8,000 feet in the Sierra Nevada of eastern California, tugging a sled loaded with batteries, bolts, wire and 40 pounds of sunflower ...

A new study, published in the high impact journal Science, confirms enhanced cognitive abilities can be associated with longer lifespan in mountain chickadees. While there is no denying ‘survival of ...

We have an abundance of black capped and mountain chickadees throughout the winter. How do they do it? They are all of 3.5 ounces and 3-5 inches long — and very active! Chickadees are in the family of ...

The chickadee flew right past me to a tree 15 feet away and disappeared into a hole in a gnarly ponderosa pine. It emerged less than a minute later, watched me for a moment and left to collect more ...

Benjamin Sonnenberg receives funding from the National Science Foundation. Wet snow pelts my face and pulls against my skis as I climb above 8,000 feet in the Sierra Nevada of eastern California, ...