A History of North American Birds; Land Birds; Vol. 2 of 3 - Spencer Fullerton Baird; T. M. Brewer; Robert Ridgway - Page №116

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2. Pipilo erythrophthalmus. ♂ Pa., 2135.

3. Pipilo erythrophthalmus. ♀ Kansas, 8194.

4. Pipilo chlorura. ♂ Rocky Mts., 2644.