. Handbook of birds of the western United States, including the great plains, great basin, Pacific slope, and lower Rio Grande Valley . SCAUP DUCK: BLUE-BILL. Bill short and wide, bluish with black tip. Male in breeding plumage :head black, glossed with green; shoulders, rump, and chest black ; bellywhite, margined along sides with light grayish; crissnm black. Post-.

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Keywords: ., bookauthorbaileyfl, bookcentury1900, bookdecade1900, bookyear1902