AMUR GREEN HERON.
- Ardea virescens var. amurensis Schrenck, Reis. Amurl. (1860), 1, 437.
- Butorides amurensis Sharpe, Cat. Birds Brit. Mus. (1898), 26, 181; Hand-List (1899), 1, 200; McGregor and Worcester, Hand-List (1906), 34.
Calayan (McGregor); Cebu (Everett, McGregor); Luzon (Whitehead); Palawan (Everett); Samar (Steere). Greater Sunda Islands, China, Japan, Celebes, Amurland.
Although in color this species seems to be exactly like B. javanica it is much larger; the length of wing is particularly noticeable and the bill is longer, and deeper. A male collected by Major Mearns measures: Wing, 210; tail, 73; culmen from frontal feathers, 66; depth of bill at posterior border of nostril, 15; tarsus, 54; middle toe with claw, 62.
A female from Calayan measures: Wing, 197; tail, 69; culmen from frontal feathers, 64; depth of bill at posterior border of nostril, 13; tarsus, 52; middle toe with claw, 54.
Some of the records for B. javanica probably refer to the present species but it is impossible to disentangle them.
147. BUTORIDES SPODIOGASTER Sharpe.
NICOBAR GREEN HERON.
- Butorides spodiogaster Sharpe, Bull. Brit. Orn. Club (1894), 3, 17; Cat. Birds Brit. Mus. (1898), 26, 182, pl. 2; Hand-List (1899), 1, 200; Mearns, Phil. Jour. Sci. (1907), 2, sec. A, 353.
Palawan (Mearns). Andaman and Nicobar Islands.