A History of North American Birds; Land Birds; Vol. 3 of 3 — Buteo swainsoni, Bonap. Var. swainsoni, Bonap. SWAINSON’S HAWK; BAIRD’S HAWK.

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A History of North American Birds; Land Birds; Vol. 3 of 3 Volume 3 of 3 · Buteo swainsoni, Bonap. Var. swainsoni, Bonap. SWAINSON’S HAWK; BAIRD’S HAWK. · ch 98/252

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