All it took was that one warm day a couple of Saturday’s ago when the temp rose above 40 to produce spring bird song. The chickadees in our neighborhood suddenly began to sing their loud fee-bee song. This can be heard throughout the year, but is more common in spring and summer. It’s sung by males to advertise territories and repel rivals. One warm day and they were thinking of girls. Cardinals here also began to tee up on tree tops and sing their availability advertisement. Yesterday’s snow did nothing to slow them up. The trigger is the increasing amount of daylight we’re receiving. In the photo is a male cardinal.

This entry was posted on Friday, February 27th, 2009 at 10:18 am and is filed under Backyard birding, Bird biology. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.