Zoologger: DJ frogs sing like birds and mix new tunes on the hop
IT’S the king of amphibian ad-libbers. Male Gracixalus tree frogs of Vietnam improvise melodies every time they sing. To our ears, the songs of G. gracilipes, G. supercornutus and G. quangi sound like birds chirping. But each performance is unique in its complexity, length, volume, pitch and structure. With most other frogs, individuals have their...