Plate CCCXCIII. Fig. 2. Male. Fig. 3. Female.
Male with the upper parts light ultramarine, with a tinge of green;
sides of the head, fore neck, and sides of neck, and the anterior half
of the breast, light greenish-blue, that colour gradually fading into
white behind. Female with the upper parts light greyish-brown, the
rump and wing-coverts blue; fore part of neck and anterior portion of
the breast reddish-grey, the rest of the lower parts pale
brownish-grey.
_Male_, 7-1/4; wing, 4-((7-1/2)/12). _Female_, 6-3/4; wing, 4-2/12.
Columbia River, Rocky Mountains, and Fur Countries. Abundant.
Migratory.
Erythaca (Sialia) Arctica, Arctic Blue Bird, Swains. & Rich.
F. Bor. Amer. v. ii. p. 209.
Arctic Blue Bird, Sialia Arctica, Nutt. Man. v. ii. p. 573.
Arctic Blue Bird, Sylvia Arctica, Aud. Orn. Biog. v. v. p. 38.