Swallow, mainly white with brown wings, and a black tail and cap.
10+ individuals noted around open marsh area.
Hundreds circling the pump house on this water treatment pond; individuals periodically darting under the eaves where I presume they are nesting.
Someone has 'decorated' this structure with dangling/waving mylar strips... is that an expedient to discourage these birds?
Four pairs of Barn Swallows nest on the house we are staying in.