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Re: Tyrannosaurid Growth Spurts

Dann Pigdon dannj@alphalink.com.au wrote:
> Wedge-tailed eagles (a member of the golden eagle family) in Australia
> will attack animals of greater mass than themselves (small wallabies,
> kangaroo joeys). Of course they are incabable of flying off with their
> kill if it weighs much more than they do. Wedgies tend to spend a lot of
> time scavenging from larger carcasses anyway, and you will often see
> them by the roadside feeding on road-kill 'roos.
I guess the ability to fly away with kills probably discourages birds of prey 
from taking large prey.  Are there any analogies
amongst extant flightless birds?