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Hunting birds (was Re: Tyrannosaurid Growth Spurts)

Roadrunners may hunt in tandem with their mates.  They aren't large
predators, but they do pursue their prey bipedally, rather than dive bombing
them.  See http://www.math.wustl.edu/~brody/arizona/roadrunners.jpg.  The
roadrunners aren't pursuing anything in this photo, but it happens anyway.

However, unlike tyrannosaurids, roadrunners eat their prey whole, which
tends to be rather small (although the birds will make their prey easier to
swallow by whacking the Jehosephatz out of them on rocks, breaking up their
bones).  See

How does a roadrunner couple share its meals then, if they eat the animals
whole?  Alternating feeding?
"Dino Guy" Ralph W. Miller III
Docent at the California Academy of Sciences
proud member of the Society of Vertebrate Paleontology