The Cupertino nonprofit is celebrating its centennial with a month of free activities open to the public as well as ...

Pygmy nuthatches are frequent visitors to our winter suet feeder. Delightful small birds, Sitta pygmacea often perch upside down. Routinely, we see three to four, their quick movements captivating.

We've had a busy summer. There have been plenty of chickadee families in Boulder county, in addition to some unexpected tenants including red-breasted, white-breasted, and pygmy nuthatches! The field ...

The red-breasted nuthatch eavesdrops on chickadee conversations to get advanced notice of predators like pygmy owls. Cephas via Wikimedia Commons under CC BY-SA 3.0 Black-capped chickadees have a ...