Birds on the Feeder in Front of Our Kitchen Window

I'm getting sparse visits at the suet feeder in front of our kitchen window. Pictures are fuzzy 'cause I have to snap them through the screen. I really want to find out the species of the bird in the first three pictures. It sings loudly and beautifully. It also seems to be hyper, quick, jerky movements. I love the birds. Hope to see more. One woodpecker travels with the chickadees. Haven't been able to catch a shot of it yet. The blurry picture of another woodpecker with a red head is as good-as-it-gets 'cause it was high up in the tree. Woodpeckers, I'm aiming for shots of you!