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"Fig. 31. - Ulna of Colaptes mexicanus, showing points of attachment of the secondaries. (Dr. R. W. Shufeldt, U. S. A.)." Elliot Coues, 1884

Red Shafted Woodpecker Ulna

"Fig. 31. - Ulna of Colaptes mexicanus, showing points of attachment of the secondaries. (Dr. R. W.…