Thanks, Cliff! It¡¯s just so weird that Merlin did not identify the bird when it looks exactly like one of the photos on their site of a mountain bluebird! Audubon said mountain bluebirds are very common in this area in the winter but as you say, you do have to take into account their behavior as well as their appearance- being in a flock and foraging upside down like that. We will just have to go out and get a better look at them in the daylight and see if they still look sky blue! Thanks to all for your input!
