A History of North American Birds; Land Birds; Vol. 1 of 3 - Spencer Fullerton Baird; T. M. Brewer; Robert Ridgway - Page №578

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PLATE XXIV.

1. Plectrophanes maccowni. ♂ Dakota, 35951.

2. Plectrophanes nivalis. ♂ Ft. Resolution, B. A., 19632.