Chimney swifts are slender dark gray-brown birds.
Least Concern - Population Decreasing
Cities and towns
Chimney swifts build half saucer shaped nests in chimneys, barns, cisterns, garages, outhouses, sheds, silos, vents, or wells out of twigs stuck to the wall with their saliva.
Spring, summer
Insects
Chimney swifts hunt and eat in flight.
Barn Swallows, Cliff Swallows, and Tree Swallows
Chimney swifts are often confused with barn swallows because they are a similar shape and size. Chimney swifts are brown and narrower. Barn swallows have tawny underparts.
Chimney swifts are often confused with cliff swallows because both hunt in the air. Chimney swifts have longer narrower wings. Cliff swallows have white underparts.