Carolina Wren Enjoys the Sun

Enjoying the February sunshine, this Carolina wren was uncharacteristically not singing this morning. Rather, he was sounding an alarm call that is a series of screeching-clicks.
This guy was on the wood pile, most likely searching for insects in all of the nooks and crannies, and rather upset about something. I am guessing that a squirrel was too close, but who knows. Note in the second photo, how far around his head can rotate; he can basically look behind himself.
Hope he enjoyed the sun, whose time is increasing daily with the coming of spring, but who will not been seen as freezing rains arrives overnight.