Why Do Birds Cache Food? “Why isn’t that bird eating ... And they have a remarkable ability to remember every hiding place. Chickadees aren’t alone in this bird behavior.

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 ...

Black-capped and mountain chickadees are closely-related species that co-occur in Boulder County but occupy different habitats based on elevation. The Boulder Chickadee Study leverages an extensive ...