Taking guess on the id. It was pulling an ant into a hole in a fallen tree branch.
Saw this gal at work back in October! At least, I think this was a female, because we also saw what looked like an egg sac.
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70* F. shaded oak understory. Floating on line with carpenter ant & a hitchhiking gnat.
Female closer. C 10m from microphone in small tree about 5m up. Male about 20m away from me, 15m from female.
Listen to strong singing 46 secs; bird was red cardinal?