If those are harbingers of spring, you have a lot of spring coming your way! I know, like cave said, lots of robins will overwinter. We have quite a few American goldfinches
in our area. One winter, while looking out the kitchen window in the back, the bare winter ground appeared to be moving.
All at once, this giant cloud of birds rose up as one, moved about 20 feet north, then set back down again. It was hundreds of goldfinches! Guess they decided to go out for lunch together that day.