Your Guess Is as Good as Mine

Didn’t quite finish Dunn’s book today, so here’s another shot I like from last week’s Nisqually trip, though I’m still not sure what the bird is since there are so many birds that look quite similar. I’ve changed my mind too many times to have any confidence in what it really is, but at the moment my best guess is that it’s a Hutton’s Vireo. What I find most confusing, though, is that no one mentions the dramatic yellow spot that’s clearly visible near the tail.

Possible Hutton's Vireo