This time it is anonymous so you won't be embarrassed or held accountable for any mis-identifications!
I'll provide some clues in the comments section (below), I tried to make it so that the questions generally increase in difficulty from beginning to start! Let me know what you think of this new way of quizzing.
Answers to Quiz #3:
Answers (I've noted the most obvious time that the bird sang in the recording):
Golden-winged Warbler (0:01)
Hooded Warbler (0:08)
Eastern Towhee (0:08/0:09)