Contopus borealis, ♂ II. 353, pl. 44, fig. 1

pertinax, ♂ II. 356, pl. 44, fig. 2

richardsonii, ♂ II. 360, pl. 44, fig. 4

virens, ♂ II. 357, pl. 44, fig. 3

A History of North American Birds; Land Birds; Vol. 3 of 3 · 第 485 / 607 题