Bird Song ID. Please. Jacksonville, Fl., USA (1 Viewer)

[Newton-W]

Jacksonville, Fl., 4/22/2020
I never could spot this one, but there were Black-throated Blue Warblers, two males and one female, one male Northern Parula, and several Eastern Bluebirds. The Bluebirds were singing their usual song. I'm pretty sure it wasn't one of the three I mentioned, and if it was, I've never heard this song from them. We have lots of Warblers right now.
Any help is much appreciated.

Thanks in advance,

Newton

 

[Microtus]

The loud song is from a White-eyed Vireo.

 

[Newton-W]

The loud song is from a White-eyed Vireo.

Thank you. That is it, and no wonder I couldn't see it. Small bird, stationary, in a sprawling Live Oak. More than likely, it was right over my head All the others were actively feeding.

Thanks again,

Newton