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2007-07-05 10:29:20 · 1 answers · asked by Anonymous in Pets Birds

1 answers

It's the way their skeletons are formed - the motion of their legs causes the neck muscles to move this way. Strange design!

Chalice

2007-07-05 10:48:57 · answer #1 · answered by Chalice 7 · 1 0

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