I'd like to thank everyone who sent in a response for the photo quiz. As I look back now it wasn't that easy! There were a number of answers including Blackpoll Warbler, Yellow-rumped Warbler, Black-throated Green Warbler and a couple of other species. I now realize it wasn't easy, in fact very difficult. Since I took the photo and watch the bird feeding and have over 40 years of experience in the field I took it for grant it that is was easy. I really appreciate everyone's feed back and I thank you!! Here is another photo of the same warbler, let me know what you think.