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Re: large fossil birds
Patrick Norton wrote:
But on all three accounts, I don't think we'll find any Mesozoic bird
that's heavier than _Dromornis_ <
And why not? What's so magical about the 500 kg limit for a ground dwelling
What I meant to say was "I don't think we KNOW of any Mesozoic bird that's
heavier than _Dromornis_." In theory, there's no reason why a terrestrial
bird couldn't have exceeded 500 kg. Or an aquatic bird, for that matter.
I'm reminded of those giant whale-like penguins in "After Man". :-)
or has a broader wingspan than _Argentavis_.>
I might agree with this, since A. magnificens is probably about as large a
a feathered flapping vertebrate flyer can get.
I wonder why...? Why couldn't birds get as large as the azhdarchids?
Mickey Mortimer wrote:
The largest Mesozoic volant bird was Enantiornis leali, at about a meter
Thanks, that's the one I was looking for.
You won't find anything over the Cenozoic mass limit (~550 kg) for birds in
the Mesozoic without invoking Utahraptor, Deinocheirus or the larger
Of course, using Ax's definition (followed by Olshevsky) ALL dinosaurs are
birds, so _Argentinosaurus_ could be the largest avian. :-)