Roger Tory Peterson (American, 1908-1996), “Eiders”, Common Eider (Somateria mollissima), King Eider (Somateria spectabilis), Steller’s Eider (Polysticta stelleri), Spectacled Eider (Somateria fischeri) each shown in order: adult male and female in flight, then adult female, immature male, and adult male sitting, Gouache, watercolor pencil, and ink on paperboard cut-outs, c. 1993, On loan from the collection of Dr. Michael and Elyn Stubblefield