I believe the first three pictures are the same kind of bird. Not sure about the third image though as I can't see if it has wingbars.
Oops, DG reordered images, I meant that #2 might be a different bird.
This message was edited Aug 29, 2012 12:35 PM
flatpickit Charleston, SC Sep 01, 2012
Image 1 looks like a different bird (or individual). It has weak wing bars, similar to an immature Pine Warbler, but is very yellow.