African Palm Swift

Almost never seen away from the air, wheeling in swift, agile flocks around palm trees, towns and open country where it feeds entirely on flying insects. Its thin, twittering calls given on the wing are often the first clue to a flock overhead, and it nests and roosts by clinging to the underside of palm fronds. Warm, insect-rich conditions bring the largest and most active feeding flocks into view.