Birds around the world share a mysterious warning cry

Birds across the globe independently evolved a shared warning call against parasites, blending instinct and learning in a remarkable evolutionary pattern. The finding offers a rare glimpse into how cooperation and communication systems evolve across species.

​Birds across the globe independently evolved a shared warning call against parasites, blending instinct and learning in a remarkable evolutionary pattern. The finding offers a rare glimpse into how cooperation and communication systems evolve across species. Birds across the globe independently evolved a shared warning call against parasites, blending instinct and learning in a remarkable evolutionary pattern. The finding offers a rare glimpse into how cooperation and communication systems evolve across species.