Lagopus albus, III. 457, pl. 61, fig. 8

albus (_summer_), ♂ III. 457, pl. 62, fig. 1

albus (_winter_), ♂ III. 457, pl. 62, fig. 3

albus (_summer_), ♀ III. 457, pl. 62, fig. 2

leucurus (_summer_), ♂ III. 464, pl. 62, fig. 6

rupestris (_winter_), ♂ III. 462, pl. 62, fig. 4

rupestris (_summer_), ♀ III. 462, pl. 62, fig. 5

A History of North American Birds; Land Birds; Vol. 3 of 3 · 第 518 / 607 题