A History of North American Birds; Land Birds; Vol. 3 of 3 — Lagopus mutus, var. rupestris, Leach. ROCK PTARMIGAN.

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A History of North American Birds; Land Birds; Vol. 3 of 3 Volume 3 of 3 · Lagopus mutus, var. rupestris, Leach. ROCK PTARMIGAN. · ch 189/252

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