Northern Rough-winged Swallows

Northern Rough-winged Swallows are Fairly Common in Western Washington  mainly from 2nd of April-August mostly spending it's hard earned time flying in the air eating flying insects like, Mayflies, Fleas, Mosquitoes, Crane Flies, Small Bees, Carpenter Ants, Small Flies, Sand Flies, Water Beetles, Damselflies, Lady Bugs, Midges, Lacewings, Snake-flies, Grasshoppers, Leaf-hoppers have been seen with Yellowjackets but not regular.
Habitat 
Is mostly near water with banks for nesting but will also forge over land such as sand pits, farm areas.

Behavior

Northern Rough-winged Swallows generally do not gather in large flocks. Like other swallows, Northern Rough-winged Swallows are aerial foragers, flying low over open water, fields, and narrow gullies. They feed over water more than most swallows, and sometimes pluck food from the water's surface. Northern Rough-winged Swallows have a distinctive slow and deliberate wing-beat.