Mergus merganser, Lin.
972. :- M. castor, Lin. :- Jerdon's Birds of India, Vol. II, p. 817 ; Murray's Vertebrate Zoology of Sind, p. 309 ; Game Birds of India, Vol. Ill, p. 299.
Length, 3 25.0 to 28.1, 22.9 to 25.0 ; expanse, 35.6 to 40.8, 34.5 to 37.8; wing, 3 10.95 to 12.1, 9.8 to 10.95; tail, 4.8 to 5.9, 4.6 to 5.65; tarsus, 2, 1.75; bill, 2.8, 2.5 ; weight, 2 to 3 5/16. lbs.
Bill deep blood-red, black on culmen, edges paler ; irides red ; feet orange-red.
Male: Head (with a short thick crest) and upper part of the neck, glossy blackish-green ; lower part of the neck white ; upper back and scapulars next the body deep black ; the rest of the back and upper tail-coverts ashy; the tips of the feathers whitish here and there; tail ashy-grey ; breast, abdomen, and under tail-coverts, white, tinged with orange-buff; wing coverts and outermost scapulars rich buff-orange, and the latter edged with black.
The female (and young males till the second moult) have the head and neck reddish-brown; the throat white; the upper plumage ashy; beneath yellowish-white ; the sides of the breast, and the flanks pale ashy; a white speculum ; primaries black ; tail ashy-brown.
The Goosander is believed to occur in Sind.