I don't know for sure, but iNaturalist said probably in the Phoebe family. That's good, they are flycatchers!
I think they might be Eastern Phoebes.
Eastern Phoebe Overview, All About Birds, Cornell Lab of Ornithology
One of our most familiar eastern flycatchers, the Eastern Phoebe’s raspy “phoebe” call is a frequent sound around yards and farms in spring and summer. These brown-and-white songbirds sit upright and wag their tails from prominent, low perches. They typically place their mud-and-grass nests in...
www.allaboutbirds.org
