Puerto Rican coqui frogs were accidentally introduced to Hawaii in the 1980s, and today there are as many as 91,000 frogs per hectare in some locations. What does that mean for native wildlife?

Coquí frogs are invasive species in Hawaii. But they don’t seem to bug the islands’ native and nonnative birds. Jason G. Goldman reports. Coquí frogs. They’re named for the sound they make. And though ...

Ifrita kowaldi, a blue-capped handful with the tree-poking habits of a nuthatch, concentrates in its feathers and skin the same alkaloids that defend poison dart frogs. This explains why the bird’s ...

Getting your Trinity Audio player ready... NEW ORLEANS — Invasive, noxious Cuban treefrogs that eat smaller frogs and grow as big as a human fist have established a population in New Orleans, and ...

The nice thing about being a frog is that you don’t have to chew your food—just gulp, and down the hatch. The problematic thing about being a frog is that you don’t have to chew your food, which means ...