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To: DittoJed2
DittoJed2 wrote: Hoatzins and Ostriches and apparently other bird species have claws on their wings.

Interesting about the hoatzin, one of the most primitive birds, and one which seems not to be closely related to any other living bird. The wing claws are found only in the young bird, and persist only for 10 weeks. It looks very much like a case of ontogeny recapitulating phylogeny.

Ostrich wing claws are modified feathers and not in any way homologous.

Baby birds are born with a tooth like appendage that helps them get out of their shell, so they must have the genetics to form teeth.

Ever seen a chick 'egg tooth'? Know where it is?

http://www.owlpages.com/species/bubo/virginianus/greathorned12.html

And, a bony tail could be just a micro-evolution adaptation of a creature or some strange genetic mutation.

All Archaeopteryxes have them, so it's not a simple mutation of one individual.

Buit more broadly, your post fails Occam's razor. The simplest and most compact explanation is that Archaeopteryx is a transitional form. You can always argue that all of its reptilian features were secondary adaptations; but no living bird shows wing claws in the adult derived from the hand bones; no other shows teeth in the jaw in any way homologous to reptilian teeth; and no other has a long, bony tail.

1,813 posted on 08/21/2003 8:30:46 AM PDT by Right Wing Professor
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To: Right Wing Professor
Actually there is a bird in South America with claws on it's wings.
1,816 posted on 08/21/2003 8:35:29 AM PDT by Porterville (I hate anything and anyone that would attack the things that I love...)
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To: Right Wing Professor
From:http://www.netfundu.com/magazine/oct02/birds.htm One of the most interesting aspects of Hoatzin ecology is that young birds have a pair of claws on the bend of each wing. When confronted with danger, the young birds drop out of the tree into the water. They wait there until the danger has passed and climb back up to their nest with the help of their clawed wings. Adult birds have another means of defense; they can produce on offensive odor that drives enemies away. Hence, it is commonly called "the stink bird".
1,817 posted on 08/21/2003 8:37:56 AM PDT by Porterville (I hate anything and anyone that would attack the things that I love...)
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To: Right Wing Professor
And no other living creature looks like a giraffe, but that doesn't make the giraffe a dinosaur.
1,868 posted on 08/21/2003 10:21:24 AM PDT by DittoJed2
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