Birds of the air, that take their insect food on the wing. Migratory. Flight
strong, skimming, darting; exceedingly graceful. When not flying they choose
slender, conspicuous perches like telegraph wires, gutters, and eaves of
barns. Plumage of some species dull, of others iridescent blues and Greens
above, whitish or ruddy below. Sexes similar. Bills small; mouths large. -
Long and pointed wings, generally reaching the tip of the tail or beyond. Tail
more or less forked. Feet small and weak from disuse. Song a twittering warble
without power. Gregarious birds.
Barn Swallow.
Bank Swallow.
Cliff (or Eaves) Swallow.
Tree Swallow.
Rough-winged Swallow.
Purple Martin.