. . ease. As their reports cover an average period of abouttwenty-seven years, they deserve some consideration. The stomachs of nine White-winged Scoters from Massa-chusetts waters, examined by Mr. W. L. McAtee, of theBiological Survey, contained of mussels, about forty-four percent.; quahogs, twenty-two per cent.; periwinkles, nineteenper cent.; hermit crabs, nine per cent.; the remainder wascaddis larvae and algse and other vegetable matter. Threebirds from Nantucket had eaten only the common mussel{Mytilus edulis). 1 Eaton, E. H.:
. . ease. As their reports cover an average period of abouttwenty-seven years, they deserve some consideration. The stomachs of nine White-winged Scoters from Massa-chusetts waters, examined by Mr. W. L. McAtee, of theBiological Survey, contained of mussels, about forty-four percent.; quahogs, twenty-two per cent.; periwinkles, nineteenper cent.; hermit crabs, nine per cent.; the remainder wascaddis larvae and algse and other vegetable matter. Threebirds from Nantucket had eaten only the common mussel{Mytilus edulis). 1 Eaton, E. H.: Birds of New York, 1910, p. 223. 2 Brewster, William: Birds of the Cambridge Region, 1906, p. 123. Howe and Allen: Birds of Massachusetts, 1901, p. 56. BIRDS HUNTED FOR FOOD OR SPORT. 163 SURF SCOTER {Oidemia perspicillata). Commonor local names: Gray Coot; Horsehead; Skunkbill; Skunkhead; Skunk-top;Surfer; Google-nose; Patchhead; Patchpolled Coot; Pictured-bill; Plaster-bill;Snuff-taker; Butterboat-billed Coot; Butterboat-bill; Hollow-billed Coot; Female. Male. Length. — 18 to 21 inches. Adult Male. — Triangular patch on forehead and longer one on hind neckwliite; rest of plumage glossy black, duller below; bill showing crim-son, orange, scarlet, yellow, black and white; feet crimson and reddishorange; iris pearl white or pale cream. Adult Female. — Top of head blackish, usually more or less grayish whiteon side of head below level of eye, sometimes divided into two patches;rest of plumage sooty brown, silvery gray below; feet, bill and iris dark. Young. — Similar to female. Young males and possibly females have twopatches of grayish white below level of eye, one before and the otherbehind it. Field Marks. — Male distinguished from other Scoters by patch of white onhind neck. Female and young distinguished from White-winged Scoterby lack of white on wing, and from American Scoter by grayish whiteon side of head, sometimes but not always divided into two
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