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This is Scientific Americans' 60-second science.

I'm Jason Goldman. Got a minute?

Cokey frogs. They're named for the sound they make. And though just an inch long, a

coquie can produce a 90-deceble call, about the volume of a motorcycle 25 feet away. The animals and their nocturnal chirps

are beloved in their native Puerto Rico, but not in Hawaii, where they became invasive

in the late 1980s. The frogs have become a nuisance, in part because they cause people to lose sleep,

which has actually driven down property values.

But some of Hawaii's endangered insect species could face extinction due to the hungry

invaders. Biologists also fear that the frogs could impact Hawaii's insect population to

such an extent that native birds that also eat insects could go hungry.

A group of researchers has now put that concern to the test by looking at 30 sites on the

Big Island, half that were infested with coquies, and half that were still cokey-free.

And we didn't see any response in the native birds. They seemed to be doing fine with the

coquies, at least their abundances were similar to be doing fine with the coquies. At least their

abundances were similar in the places where it were coquies and not coquies. University of Utah

ecologist Karen Beard. But it was the non-native birds where we really saw the response. And

...