Blooming unusually early this year. Ottawa Bluffs Preserve (The Nature Conservancy).
Private property accessed with permission. No public access to this area. Record also entered in eBird: https://ebird.org/checklist/S163619398
A pair, seemingly, variously perched in a dead tree, valuting into the air hawking for insects (note bill contents in a couple of images), and occasionally returning to a nest cavity. Vocalizations were intense during the entire performance.
Note that one bird still has black spots or bars on the secondaries, in spite of having a red head.