winter birds singing

Hello, all. It’s chilly outside, and we just had our second snowstorm this week, but a cardinal kept me company this morning with his song while I was shoveling. My 11-year-old daughter has taken an interest in bird watching this winter, so I found some links to share with her about birds singing. I thought I’d share them with you in case you’ve got some bird watchers, too:

How do animals know what season it is? From Arizona State University’s Ask a Biologist
http://askabiologist.asu.edu/explore/animals-seasons