Vaux's Swifts

Vaux's Swifts are Abundant in Western Washington from 3 week of April-September they spend there time mostly in the air eating flying insects like, Midges, Flies, Fleas, Leaf-hoppers, Lady Beetles, Honey Bees, Crane Flies, Lacewings.
Habitat 
Is around cities, suburbs, towns, villages, chimneys, forest, flowing waters, may be hard to find in some localities also can be high up. nesting in hollow woods.

Behavior

Vaux's Swifts forage in fast flight, often low over the water. Their wide bills act as traps as they fly into swarms of insects.

Note drops in chimneys during colder periods and in Migration in Ft Lewis and North near Seattle