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Flying quacking ducks

Why do ducks quack when they are in flight?

I thought the V formation enabled them to keep visual contact.

Does not this production of sound put unnecessary strain on their energy reserves?

 
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  • Asked by petefinn
  • on 2010-12-16 09:35:31
  • Member status
  • none

Categories: Animals.

Tags: ducks, Inflight, Quack.

 

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