A regular sight on the utility lines that run above my yard from the alley to my house.
Baby swallow heads poking out above their nest. They squawk (is there a specific word for the sound baby swallows make?) loudly every time their parent(s) visit(s) the nest.
See also https://www.inaturalist.org/observations/217201301 and https://www.inaturalist.org/observations/217938259.
Tentative; had a bright red throat and emerald green back if that helps
rare bird for the region, ringed in migration