Living Birds with claws on wings

[John Bruner]

I was taught many years ago in my undergraduate ornithology class that the
only living bird with one or two claws on its wings as an adult is the
Hoatzin from Brazil. Therefore, I was very surprised to see a claw on the
first digit of the wings of 5 emus being prepared in the U. of A. Zoology
Museum.  Are there other Ratities or other living birds with a claw on the
first digit of their wing?

Just curious.  Thanks!
John
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*   Mr. John Clay Bruner                                     *
*   Department of Biological Sciences                        *
*   University of Alberta                                    *
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