Mountain chickadee chatter: Scientists are decoding the songbird's complex calls
I approach a flock of mountain chickadees feasting on pine nuts. A cacophony of sounds, coming from the many different bird species that rely on the Sierra Nevada's diverse pine cone crop, fill the crisp mountain air.
I approach a flock of mountain chickadees feasting on pine nuts. A cacophony of sounds, coming from the many different bird species that rely on the Sierra Nevada's diverse pine cone crop, fill the crisp mountain air.
