Whistling Coqui (Eleutherodactylus cochranae)

The whistling coquí, coquí pitito, Cochran's treefrog, or Cochran's robber frog is a species of frog native to Puerto Rico, the US Virgin Islands, and the British Virgin Islands. This nocturnal insectivore is also referred to as the "coquí pitito" in Puerto Rico. Their distinctive song is a single, rising whistle, which is repeated and followed by three clicking sounds.