. Birds of Massachusetts and other New England states. Birds; Birds. SEA DUCKS 263 Somateria mollissima borealis (Brehm). Northern Eider. Other name: Greenland eider. Plate 17. Description. â Similar to American Eider (S. mollissima dresseri) (see page 264) but membranous processes extending from base of bill on either side of forehead narrower and more nearly pointed ; green- ish wash on sides of head of male not extending forward below black cap almost to bill as in American Eider; bill of male in spring "bright orange yellow" ; practically indistinguish- able in all plumages from
. Birds of Massachusetts and other New England states. Birds; Birds. SEA DUCKS 263 Somateria mollissima borealis (Brehm). Northern Eider. Other name: Greenland eider. Plate 17. Description. â Similar to American Eider (S. mollissima dresseri) (see page 264) but membranous processes extending from base of bill on either side of forehead narrower and more nearly pointed ; green- ish wash on sides of head of male not extending forward below black cap almost to bill as in American Eider; bill of male in spring "bright orange yellow" ; practically indistinguish- able in all plumages from American Eider except by characters noted above. Measurements. â Adult male: Length about in.; spread about ; folded wing to ; tail to ; bill from apex of feathered forehead to tip to ; from apex of frontal process to tip to ; tarsus to Weight of male 3 to over 5 lbs. Female smaller than male. Molts. â In all respects similar to those of American Eider. Field Marks. â Ordinarily indistinguishable in field from Ameri- can Eider. (See under that species.) Voice. ââ Similar to that of American Eider. Breeding. â Breeding habits, nest, eggs and incubation period similar to those of American Eider; but eggs often found in old nests of Brant and Glaucous Gull (D. B. MacMillan). Dates: From June 10 to July. Range. â Northeastern North America and possibly Iceland. Breeds from Ellesmere Island and both coasts of Greenland south to northwestern Hudson Bay, southern Ungava (central Quebec) and Labrador; winters in southern Greenland and south to Massachusetts rarely. Distribution in New England. â A few stragglers reach the coast of Maine; one taken in Casco Bay, April 6, 1903 (John A. Lord) ; another taken in Sagadahoc County (H. L. Spinney);1 reported in Massachusetts in winter coastwise and three taken November 9, 1909, at Furnace Pond, Pembroke (John C. Phillips);2 a female was taken by George H. Mackay on Muskeget
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