A History of North American Birds; Land Birds; Vol. 1 of 3 - Spencer Fullerton Baird; T. M. Brewer; Robert Ridgway - Page №179

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3. Thryothorus bewickii, Aud. ♂ Pa., 2047.

4. Thryothorus bewickii, Aud. var.

5. Troglodyta ædon, Vieill. D. C.