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Re: Campbell's even crazier than a MANIAC? (archeopteryx climbing)

No significant predators within their range? Probably a different reason or reasons for every species that has lost the ability for flight.

----- Original Message ----- From: "Sim Koning" <simkoning@msn.com>
To: <DINOSAUR@usc.edu>
Sent: Friday, September 26, 2008 1:10 AM
Subject: RE: Campbell's even crazier than a MANIAC? (archeopteryx climbing)

I was just thinking, when I brought up ratites and why they lost their wing/flight feathers, I forgot about Rheas for some reason. Rheas still have large wings that I remember reading are used as sails. If this is the case, it is evidence of the benefit wings may give a running animal. But why did so many other cursorial flightless birds lose their flight feathers and show reduced wings?