[RobRoy]

I consider anything over 25 lbs to be a "heavy" flyer.

>>By the way, scientists also used to think that, based on their analysis, there was just NO WAY that a bee could manage to fly.....<<

Yep! I suspect as we continue to unravel history, we may resolve this issue about "heavy flyers". One guy went as far as to suggest the earths gravitational field was far weaker in the past. It would explain a lot of stuff, like a Brontosaurus being able to actually lift his head off the ground. :)

[js1138]

...scientists also used to think that, based on their analysis, there was just NO WAY that a bee could manage to fly...

You have a citation for that? An actual published journal article or something? Or do you just like the sound of wind whistling through your head?

[Al Simmons]

Sooo...if, say, Quetzalcoatlus was:

a. Too heavy to fly, and

b. Could not glide,

why do you suppose that it had bat-like wing membranes between its elongated 5th finger and body?

P.S. Its not 'Brontosaurus', its 'Apatosaurus'...and it had no problem 'lifting its head off the ground', because its neck was reinforced with tendons which kept the neck basically parallel to the ground.....(you might want to rent 'Walking with Dinosaurs'....they did a pretty good job illustrating the most recent wisdom on the subject...)