Chickadees Use Complex Calls for Predator 911

Publication: National Geographic News   Date: June 23, 2005   View Article

Black-capped chickadees employ some surprisingly sophisticated warning calls to alert birds of the same feather to the danger of predators, new research reveals.

For human soldiers, the words “enemy tank!” may cause an entire troop to take aim, whereas “enemy sniper!” may rally only a few soldiers for the capture.

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