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>In addition, I recall that someone on this list posted that there was
>extant bird with a prominent #2 ungual (apologies to Feduccia on the
>number) which made use of this claw in scaling tree trunks. Was it a
>cassowary or a seriema? Could someone please reiterate the claim?
Both the cassowary and seriema have an enlarged pedal digit II, as well
as some phorusrhacoids and I believe some brontornithids. Darren Naish
has posted quieres as to whether this may be primitive to the caramid
(including fossil relatives)+phorusrhacoid clade; we'll just have to
wait until the evidence is produced by Bob Chandler.
I think the cassowary occasionally uses the claw to climb, but neither
well nor often.
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