A History of North American Birds; Land Birds; Vol. 2 of 3 - Spencer Fullerton Baird; T. M. Brewer; Robert Ridgway - Page №235

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2. Quiscalus aglæus. ♂ Fla., 10342.

3. Corvus caurinus. ♂ Sitka, 46662.

4. Corvus mexicanus. ♂ Mazatlan, 52802.