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Science

laconicsax

(14,860 posts)

4. There's a simple evolutionary answer.

Reply to denbot (Reply #3)

Wed Mar 14, 2012, 01:47 AM

Mar 2012

The value of having four lift-generating wings must not have outweighed the added cost in resources required to make it happen.

Also, the intermediate stages would undoubtedly involve the addition of drag-inducing feathers, which could easily limit the ability to escape quickly.

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Highlight:

Iridescent, Feathered Dinosaur Offers Fresh Evidence That Feathers Evolved to Attract Mates [View all] n2doc Mar 2012 OP

They are making all those giant lizard movies obsolete Warpy Mar 2012 #1

This was bird size Yo_Mama Mar 2012 #2

Off topic, but I wonder why a 4 winged configuration has not re-evolved in birds? denbot Mar 2012 #3

There's a simple evolutionary answer. laconicsax Mar 2012 #4