The Hairy Woodpecker with a yellow crown came back to my feeder on June 26 and even posed for me! I was confused by the yellow coloration on the crown, instead of a red patch on the back of the head.
Note: I did some research on this and apparently juvenile Hairy Woodpeckers occasionally have an orange or yellow patch on the crown. Red on the crown, however, is more typical of juvenile Hairy and Downy Woodpeckers. D.M.