First up Fork-tailed. While some of these are among the harder ID problems out there this one can be confused with only 3 birds, Scissor-tailed, escaped Whydahs, and birds with garbage trailing from their legs.
I have one bad pic of the next 2 birds in the same frame as the Forktail that I didn't include. Here's a medium sized flycatcher with a yellow-belly and a titmouse-like crest.
One of the kiskadee class...
This is a harder one (2 pics)
Finally another subtle species whose high thin "few-breeooh" is another song worth learning.