A History of North American Birds; Land Birds; Vol. 3 of 3 — Bubo virginianus, var. arcticus, Swains. WESTERN GREAT HORNED OWL.

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A History of North American Birds; Land Birds; Vol. 3 of 3 Volume 3 of 3 · Bubo virginianus, var. arcticus, Swains. WESTERN GREAT HORNED OWL. · ch 35/252

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