Coquí frogs got smaller, squeakier as climate warmed

Amphibians on a Puerto Rican mountain changed chirps over 23 years

By Susan Milius, 15:29 PM April 8, 2014

Climate change might also mean a bit of frog-call change.

Male coquí frogs (Eleutherodactylus coqui) along a mountain slope in Puerto Rico have increased the pitch of their “coquí” calls a bit and shortened their chirps compared with frogs at the same altitudes 23 years earlier. Peter Narins and Sebastian Meenderink of UCLA report the finding April 9 in Proceedings of the Royal Society B.

Warming temperatures tend to nudge animals toward smaller bodies. And smaller body sizes in frogs often m...

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