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Looking at skeletons of ancient birds (not so much Archaeopteryx as things
like Confuciusornis and Cathayornis) I am continuously surprised by their
short little necks. Cathaynoris has a short curve of cervical vertebrae
(4-5 looking at the photo), which Confuciusornis's neck is even shorter.
Does anyone have any theories as to why these necks are so short? They make
sense aerodynamically, I suppose, but when the birds were at rest, they must
have had a hell of a time looking around.