The Avifauna of Micronesia, Its Origin, Evolution, and Distribution

by Rollin H. Baker

Aythya valisineria (Wilson)

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Anas valisineria Wilson, Amer. Ornith., 8, 1814, p. 103, pl. 70, f. 5. (Type locality, Eastern United States.)

Nyroca valilisineria Reichenow, Ornith. Monatsber., 1901, p. 17 (Jaluit); Schnee, Ornith. Monatsber., 1901, p. 131 (Marshalls); idem, Zool. Jahrbücher, 20, 1904, p. 390 (Marschall Inseln).

Nyroca valisineria Phillips, Nat. Hist. Ducks, 3, 1923, p. 124 (Marshall Islands).

Aythya valisineria Hand-list Japanese Birds, 3d ed., 1942, p. 207 (Marshall Islands).

Geographic range.—Breeds in northwestern and northcentral North America. Winters south to Gulf States, Florida and Mexico. In Micronesia: Marshall Islands—Jaluit.

Remarks.—Reichenow (1901:17) and Schnee (1901:131) reported three species of American ducks (Aythya valisineria, Anas acuta tzitzihoa and Anas crecca carolinensis) in the Marshalls in October, 1899, and May, 1900. These species may be stragglers to eastern Micronesia.