Focus on Arts and Ecology

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Dive-bombing hummingbirds

Posted by Focus on Arts and Ecology on - -
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Hello Nature readers,
Today we discover a twist in the tail to impress hummingbird females, look at how science can help curb the threat of chemical weapons and imagine what traces a 50-million-year-dead civilization might have left behind.
a Costa's hummingbird
Male Costa's hummingbirds perform fancy feather work to woo females. (Ed Reschke/Getty)

Dive-bombing hummingbirds add a twist

Most male North American hummingbirds show off with a flashy dive during which they fan their tails to make a chirping sound. Females seem to use the chirps to rate the speed of the dives — with the faster the better. But male Costa’s hummingbirds (Calypte costae) can boost the volume and pitch of the chirps by twisting feathers in their tail toward the female, masking their true velocity.
Nature | 2 min read
Reference: Nature paper

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