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RE: New Mesozoic bird papers (advance publication)
Perhaps you mean screamers, which are the Anhimidae (not actually ducks).
> I have just been reading about the flying steamer duck in Darren Naish's
> Tetrapod Zoology Book 1. This duck uses keratanised knobs on the
> capometacarpi to beat other birds to death. The duck from hell!
> -----Original Message-----
> From: Ronald Orenstein [mailto:firstname.lastname@example.org]
> Sent: 17 December 2010 15:16
> To: email@example.com; firstname.lastname@example.org
> Subject: Re: New Mesozoic bird papers (advance publication)
> Without having seen the paper, I wonder if climbing and prey capture are
> only options. How about aggression between individuals of the same
> which is what some spur-winged birds use their wings for today?
> Ronald Orenstein
> 1825 Shady Creek Court
> Mississauga, ON L5L 3W2
> From: Brad McFeeters <email@example.com>
> To: firstname.lastname@example.org
> Sent: Fri, December 17, 2010 12:10:03 AM
> Subject: RE: New Mesozoic bird papers (advance publication)
>> Date: Fri, 17 Dec 2010 15:51:09 +1100
>> From: email@example.com
>> To: firstname.lastname@example.org
>> Subject: Re: New Mesozoic bird papers (advance publication)
>> Which brings me to this: "When birds developed an effective backstroke
>> permitting easy ascent from flat surfaces, the need for manual claws
>> disappeared, which would suggest that they were primarily used for
>> climbing tree trunks and had little function in prey capture."
>> I fail to see why manual claws couldn't be used for *both* climbing
>> and prey capture - especially among the first birds. After all, if
>> _Velociraptor_ had feathered forelimbs (based on the presence of quill
>> knobs), and used its forelimbs in prey capture - why couldn't some
>> early birds have done the same? Although I'm not suggesting that
>> birds attacked large prey the way _Velociraptor_ did.
> If the claws were used for something other than climbing, why were they
> the same time birds developed the ability to ascend without climbing?
> obviously not an airtight deduction, but still an interesting observation
> think about, especially if the correlated claw reduction + improved
> evolved more than once in different bird clades (did it? I haven't read
> paper yet either).
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