Warbler sp. in Keller Park, Richmond
This small green and yellow warbler I saw today, September 17, 2012 in Keller Beach Park in Richmond, Contra Costa County (next to Knox / Miller Regional Shoreline Park). White ring around the eye and not yellow, it could eliminates the Wilson's, and small thin beak and no dark colors on the head can eliminate juvenile and female Yellowthroat or, maybe not? or rather it's another warbler species? I'm not sure I appreciate your feedback.
Albert W. Linkowski