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2006-07-09 Science & Technology

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Posted by Anonymoose 2006-07-09 16:44|| || Front Page|| [3 views since 2007-05-07] Top

#1 There's reason why birds that flap their wings to fly max out around twenty pounds. It's mass versus surface area.

I regularly see the big black cockatoos we get around here and I am always struck by how awkwardly they fly - stiff winged, long glides - because they are close to that 20 pound limit.

Posted by phil_b">phil_b 2006-07-09 17:07|| http://autonomousoperation.blogspot.com/]">[http://autonomousoperation.blogspot.com/] 2006-07-09 17:07|| Front Page Top

#2 re: 20 lbs limit.

Condors?

Posted by Oldspook 2006-07-09 17:36|| 2006-07-09 17:36|| Front Page Top

#3 20 pounds?

The Teratorns were around up to 6000 years ago and weighed 120-300 pounds.

http://en.wikipedia.org/wiki/Argentavis_magnificens

Posted by red river 2006-07-09 18:22|| 2006-07-09 18:22|| Front Page Top

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