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Archaeopteryx flight: Ostrom's views

I attended John Ostrom's lecture at the Colorado School of Mines
Thursday, 10/26. He spoke on his views of flight and Archaeopteryx
flight. In summary, he believes Archaeopteryx could fly and fairly well.
This view is based on examination of all specimens known--he has casts of
all of them.

The most recent specimen contains what he believes may be the breast
bone for attaching the flight muscles, which has been missing before
(negative evidence).

As for the long legs, Ostrom believes that Archaeopteryx was a cursorial
predator (insectivore?) like the roadrunner or secretary bird are today.
These modern birds fly quite well but use their feet to catch their
prey. No reason Archaeopteryx couldn't have done the same.