Gulls (Laridae)

Bonaparte's Gull (Larus philadelphia) - HBW 3, p. 616

French: Mouette de Bonaparte German: Bonapartemöwe Spanish: Gaviota de Bonaparte

Taxonomy: Sterna Philadelphia Ord, 1815, Philadelphia, Pennsylvania.
Monotypic.

Distribution: W Alaska and S British Columbia E to E Quebec, and possibly N Maine. Winters along Pacific coast S to Mexico (Sinaloa) and on Atlantic coast to Florida and Greater Antilles; in mild winters from Great Lakes to Gulf of Mexico.