This is a result of the birds getting dusted with pollen. Chris Sloan Nashville, TN http://www.chrissloanphotography.com On Sun, Aug 12, 2012 at 2:34 PM, David Patterson <dpatterson9328@xxxxxxxxxxx > wrote: > August 12, 2012 > > There were at least 2, probably 3 or more, unusual hummers in the yard > today. They had mostly yellow backs, no rufous, but otherwise resembled > immature Rufous Hummingbirds better than any other US species. The yellow > was not as bright as male Goldfinch, but distinctly yellow, with some > darker spots that could have been green or black. At least some had white > half-circle eye rings behind the eyes. The tails appeared to have white > tips on the outer 2-3 feathers. Breasts and bellies dull white. > > They were feeding and perching mostly in a large pear tree, came near the > hummingbird feeder but did not feed. They frequently scratched necks and > other front areas vigorously, like a dog; I had no idea hummers had legs > long enough for that. They tended to chase away the female and/or immature > Ruby Throats in the area. They appeared slightly larger than the Rubys. > The time was about 8:15 to 9:30 or later. > > Does anyone know of yellow-backed hummers? > > David Patterson > Houston Lane > Ooltewah, Chattanooga area, > Hamilton County >