During conversation, people sometimes synchronize their voices in ways that often go completely unnoticed. Talking speeds converge, sentence lengths shift, turn-taking rhythms fall into sync. New research from the Max Planck Institute for Biological Intelligence and the Institute of Science and Tech nology Austria has revealed how nightingales also deploy complex vocal coordination when competing for territory and mates in fierce night-time singing duels, coordinating both the pitch and timing of their songs. ...read more read less