320. _Butorides cyanurus_ (Vieill.). (Little Blue Heron.) 101
321. _Ardetta involucris_ (Vieill.). (Variegated Heron.)
[Plate XVII.] 101
Argentine Ornithology, Volume 2 (of 2) A descriptive catalogue of the birds of the Argentine Republic. · 第 95 / 448 题