"Hey babe, watch this."
Male hummingbirds doing speedy divebombs to impress the ladies use their tails to produce an accompanying love song, according to researchers.
Some had previously thought the high-speed chirping emanated from the bird's throat.
A species of hummingbird makes a chirping noise with its tail feathers, not its throat, a study using high-speed video has suggested.
The loud chirp sound is produced by male Anna's hummingbirds (Calypte anna) as the birds dive towards the ground at speeds that exceed 50mph (80km/h) during their displays for nearby females.



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