A yellow-rumped warbler (Audubon’s) shows off many of his yellow patches (but not the one for which he is named). His patches weren’t very colorful, not sure if it was due to age, diet, or something else. He was visiting the suet feeder in my backyard along with some of our more typical winter visitors, I took the picture from inside my office with the window open (and screen removed).
Boolie 