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Re: re:blood flow in sauropods
One other aspect of avian activity that is ignored in these discussions is
the relatively high G (accelleration) environment of flying for many species.
Especially the insect feeding birds. Despite the relatively small bodies,
the effect of an eight or nine G turn on blood flow is substantial. Some of
these birds maintain a high G turn for times exceeding a second or two. I
know of no evidence that these birds experience blackouts during these
maneuvers or rupture blood vessels as a mammal (bats excluded) would.
I know nothing of the mechanism that allows for this behavior, but it might
well be similar to maintaining blood circulation in a long-necked animal.