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EvC Forum ⇒ Science Forums ⇒ Biological Evolution ⇒

What drove bird evolution?

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Author Topic:   What drove bird evolution?
jar
Member (Idle past 420 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 2 of 145 (117298)
06-21-2004 8:04 PM 		Reply to: Message 1 by PeriferaliiFocust
06-21-2004 7:35 PM

Is this the old "What good is a half a wing" gambit?
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I like it when this or the half an eye story comes up. IMHO it's one of the best points for evolution and the final nail in the Intelligent Design coffin. And one of the few points that could actually be tested.
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The problem with the half a wing argument is that it assumes that the only purpose of the wing was flight. But what if it started out serving some other function?
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I came across this Stephen J Gould article some time ago and it shows an experiment on just this subject.
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The idea is that what later became wings may have originally been something else. And when we look around at life, that's pretty much what we see. We don't see the well designed critter that either the Creationist or Intelligent Design folk would like. What we do see is systems that are cobbled together, stuff made to do odd jobs, patches and duct tape.
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Aslan is not a Tame Lion
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jar
Member (Idle past 420 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 19 of 145 (118545)
06-25-2004 1:36 AM 		Reply to: Message 18 by AdminNosy
06-25-2004 12:15 AM

What?
You're suggesting they should supply evidence and answer questions?
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You push that and there will be a lot of very short threads here.
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Aslan is not a Tame Lion
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jar
Member (Idle past 420 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 65 of 145 (124723)
07-15-2004 2:15 PM 		Reply to: Message 64 by redwolf
07-15-2004 2:13 PM

Re: I own chickens, Redwolf
If there were anything to evolution, chickens would regain the ability to fly as well as ducks fly.
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Why?
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Aslan is not a Tame Lion
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jar
Member (Idle past 420 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 83 of 145 (124888)
07-16-2004 12:46 AM 		Reply to: Message 82 by Steen
07-16-2004 12:31 AM

Re: Heaviest flying bird
It's also true that while volume goes up, weight might not. There is a difference between density and weight.
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Aslan is not a Tame Lion
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jar
Member (Idle past 420 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 131 of 145 (125461)
07-18-2004 1:46 PM 		Reply to: Message 129 by redwolf
07-18-2004 1:36 PM

One word: irrelevant.
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Aslan is not a Tame Lion
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