Antpitta (IMAGE)

Princeton School of Public and International Affairs

Antpitta

Caption

Birdwatchers often seek out rare and beautiful birds like the wren and antpitta (above) using "playbacks" -- or recordings of bird songs -- to draw such them out from their hideaways. But does such babbling-on-repeat harm the birds? A Princeton study says it may zap birds of much-needed energy.

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