The closest identity I could find in my bird book for this little guy is a "Bay-Breasted Warbler". We have a lot of these working our feeders in our yard. Some have more color than others. They are a busy body little creature and entertaining to watch.
If you can find a more specific identification of this bird, send it to me in the comments section or my email.
Much Appreciated,
jimmie@jimmiesart.com
