I feed birds year round and get a pretty wide variety.
Putting suet out ensures I have woodpeckers (down, hairy, rosebreasted) year round, and they really love sunflower seeds, too.
Lots of chickadees, titmice, nuthatches, yellow and purple finches and mourning doves. Got some bluejays, too.
I was able to entice a pair of bluebirds into nesting near my house. Saw the male feeding on suet last winter, put up a house, and the pair has raised at least 1 brood, maybe 2.
Kinda funny how the smallest birds like the chickadee are OK with me being on the deck when they're at the feeder, but the bluejays take off if I even approach the window!