These little amphibians — in the genus Choerophryne — would shrivel and dry up in mere minutes in the hot sun, so they are most common in the rainy, cooler mountains.
Yet many isolated peaks, especially along northern New Guinea, have their own local species of these frogs.
So how did localised and distinctive species of these tiny frogs come to be on these isolated peaks, separated from each other by hotter, drier and rather inhospitable lowlands?
