In much of the world, nature sounds like birds or maybe insects — the cheerful, rhythmic cheeps of a robin, say, or the buzz of a cicada. In Puerto Rico, it sounds like frogs. Lots and lots of ...

Coquí frogs are cultural symbols in Puerto Rico, well known for the “ko-kee” call made by the common coquí, Eleutherodactylus coqui. In fact, 16 distinct species can be found on the island — and ...