Female green tree frogs have noise-canceling lungs that help them hear mates
Inflated, the lungs resonate with extra vibrations, sending select sounds to the eardrum
Female green tree frogs (Hyla cinerea) must pick out the calls of suitable mates against a backdrop of often hundreds of males from numerous species croaking at the same time. New research suggests that inflated lungs can quiet the sounds of some of these other species, allowing females to more easily find males and mate (pictured).