A History of North American Birds; Land Birds; Vol. 3 of 3 — Nyctale tengmalmi, var. richardsoni, Bonap. AMERICAN SPARROW OWL; RICHARDSON’S OWL.

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A History of North American Birds; Land Birds; Vol. 3 of 3 Volume 3 of 3 · Nyctale tengmalmi, var. richardsoni, Bonap. AMERICAN SPARROW OWL; RICHARDSON’S OWL. · ch 21/252

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