May First
Of uniform grayish color, swift in flight, and shaped like cigars with wings, the chimney swifts might well be called the torpedo boats of the air. They never alight outside of chimneys or old buildings, and are usually seen flying high above the house-tops. For hours they chase each other through the air, keeping up a continuous "chip, chip, chip, chip, chip, chip," whenever the participants of the game come near each other.