At least I think that's what it is. There were a bunch of them and you can't see it here but they have a small yellow patch on the wings.
These little things are high energy...they dart and flit around so fast it's nearly impossible to get and keep focus on them, not to mention they like to stay hidden in the foliage!
What a beautiful capture! They are definitely hard to photograph. I find the number of different warblers with varying bits of yellow rather overwhelming to parse through!
