These little Chestnut-backed Chickadees have been the most frequent feeders. Coming in family groups, peeping at the top of their tiny voices when I run out of their favorite seed (Black Oil Sunflower Seeds). They will come if I am washing dishes just under the feeder on the other side of the window. They don't care. They have watched long enough to know I can't get them through the glass. The bold little things will watch me, and then pick up their treasured seeds and fly away... quick as lightening. They also love the suet cage I have hanging just a little farther out (sweet corn and sunflower seeds) that I keep full right now, becuase there are just SO many of them.
It has been such a joy to the kids to have them come so close so we can watch them. We have a few kinds, Juncos as well, but mostly the little chickadees are the ones that dine at the Rose Window Cafe'.