Ouch! Nice job on focusing through the leaves on the bird's eye.I'll have a stab - Least Flycatcher?
Can I change my guess? I looked more closely and I think it might be an Ovenbird.
i am going to say a vireo
What kind of Vireo?
I don't know...but I'll guess Ovenbird.
Ovenbird... or some kind of thrush - Hermit possibly? Or Swainson's?