Appearance
The grey-rumped swift is 11.5 cm long and weighs 15 g. The upperparts are black with a grey triangular band across the rump, and the underparts are slate grey. It has a long black-grey tail.Behavior
The grey-rumped swift feeds in flight on flying insects. It is often low over roads or clearings in the morning or evening, rising high above the forest, often with other swifts, in the middle of the day.The grey-rumped swift has a chittering call.
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