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Flight evolved twice?

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Author Topic:   Flight evolved twice?
RAZD
Member (Idle past 1431 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004

RAZD Posts Only
Message 31 of 36 (252122)
10-16-2005 7:54 AM 		Reply to: Message 30 by arachnophilia
10-16-2005 12:09 AM

Re: and BiPlanes TOO!
all I know is what I've seen here and from the linked articles.
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I'm just going on some 'common sense' thoughts on how this could work in practice. To me that bird had to be able to get around by more than just gliding from tree to tree or it's dead meat eventually.
​
we are limited in our ability to understand
by our ability to understand
​
RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.
This message is a reply to:
 Message 30 by arachnophilia, posted 10-16-2005 12:09 AM arachnophilia has replied
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arachnophilia
Member (Idle past 1370 days)
Posts: 9069
From: god's waiting room
Joined: 05-21-2004

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Message 32 of 36 (252286)
10-16-2005 10:02 PM 		Reply to: Message 31 by RAZD
10-16-2005 7:54 AM

Re: and BiPlanes TOO!
I'm just going on some 'common sense' thoughts on how this could work in practice. To me that bird had to be able to get around by more than just gliding from tree to tree or it's dead meat eventually.
​
why? doesn't follow. we have quite a few gliding animals today.
​
אָרַח
This message is a reply to:
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 Message 34 by RAZD, posted 10-17-2005 6:58 PM arachnophilia has replied
  
jar
Member (Idle past 420 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004

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Message 33 of 36 (252287)
10-16-2005 10:05 PM 		Reply to: Message 32 by arachnophilia
10-16-2005 10:02 PM

Re: and BiPlanes TOO!
With four gliding surfaces too.
​
Aslan is not a Tame Lion
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RAZD
Member (Idle past 1431 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004

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Message 34 of 36 (252476)
10-17-2005 6:58 PM 		Reply to: Message 32 by arachnophilia
10-16-2005 10:02 PM

Re: and BiPlanes TOO!
But not ones that are incapable of getting around otherwise.
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If those leg feathers stay out to the side they cannot run at all.
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Flying squirrels and Wallace's Frogs can run quite well.
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And you even remark that the feet look like they are adapted to running.
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That doesn't match.
​
we are limited in our ability to understand
by our ability to understand
​
RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.
This message is a reply to:
 Message 32 by arachnophilia, posted 10-16-2005 10:02 PM arachnophilia has replied
Replies to this message:
 Message 35 by arachnophilia, posted 10-17-2005 7:34 PM RAZD has replied
  
arachnophilia
Member (Idle past 1370 days)
Posts: 9069
From: god's waiting room
Joined: 05-21-2004

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Message 35 of 36 (252495)
10-17-2005 7:34 PM 		Reply to: Message 34 by RAZD
10-17-2005 6:58 PM

Re: and BiPlanes TOO!
If those leg feathers stay out to the side they cannot run at all.
​
i think they trail behind. i dunno. photos of fossils are so useless.
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And you even remark that the feet look like they are adapted to running.
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no no, the LEGS are adapted to running. the feet are perching feet, without a perching hallux.
​
אָרַח
This message is a reply to:
 Message 34 by RAZD, posted 10-17-2005 6:58 PM RAZD has replied
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RAZD
Member (Idle past 1431 days)
Posts: 20714
From: the other end of the sidewalk
Joined: 03-14-2004

RAZD Posts Only
Message 36 of 36 (252512)
10-17-2005 8:36 PM 		Reply to: Message 35 by arachnophilia
10-17-2005 7:34 PM

Re: and BiPlanes TOO!
... i think they trail behind.
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I think they have to, at which point all bets are off on it not being a ground runner.
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no, the LEGS are adapted to running. the feet are perching feet, without a perching hallux.
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Sort of the same difference, eh? Of course if the leg action is running in the air, that could explain both running legs and perching feet.
​
we are limited in our ability to understand
by our ability to understand
​
RebelAAmerican.Zen[Deist
... to learn ... to think ... to live ... to laugh ...
to share.
This message is a reply to:
 Message 35 by arachnophilia, posted 10-17-2005 7:34 PM arachnophilia has not replied
  
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