I'm not sure about the one below; at first I thought it was the American Goldfinch (winter male plumage) but the bill isn't right for a Goldfinch; then I thought perhaps Pine Warbler but it doesn't have the white eye patch of the Pine Warbler. After googling and looking at lots of bird pictures, I'm leaning towards a female Orchard Oriole. It fits the Nat'l Geographic description of the Orchard Oriole with the down-curved, thicker at base bill, and blue-gray color at the base of the lower mandible. The description says the female is olive above; bright yellow below with two crisp white wing bars and white edging on the flight feathers. I'm thinking Female Orchard Oriole, any ideas?