Pair-bonded Java sparrows show enlarged eye rings to signal breeding readiness. Birds are known for their elaborate courtship rituals and romantic gestures that are replete with beautiful songs ...

Pair-bonded Java sparrows show enlarged eye rings to signal breeding readiness. Birds are known for their elaborate courtship rituals and romantic gestures that are replete with beautiful songs ...

Java sparrows are both vocalists and percussionists. Photo: Suzme/amanaimages/Corbis When Java sparrows make love, they do it to the beat of their own in-house avian techno. As at a rave, the ...

Male Java sparrows may coordinate their bill-clicking sounds with the notes of their song. Birds may communicate using both vocalizations and movement, as for instance occurs during courtship ...