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The Guardian - UK
The Guardian - UK
Environment

Why do some birds’ heads not rock forwards and backwards when they walk?

Why do ducks’ heads not rock like pigeons do?
Why do ducks’ heads not rock like pigeons do? Photograph: Chesnot/Getty Images

When most birds walk, their heads snap backwards and forwards – pigeons being probably the most extreme example. Ducks’ heads don’t seem to do this. Why do ducks not and those others do? And which other birds’ heads don’t move as they walk? David Cockayne, Cheshire

Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published on Sunday.



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