Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.
Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
If you look at these tail pattern guides from Cornell or Dunn and Garret's, Cape-MAy and Yellow-rumped are compatible with this bird. The underside looks very yellow, which could suggest Cape may, but that's because of the low sun early or late in the day, and, as qwwety says, possible reflection from leaves. . Everything else leads towards Yellow-rumped.