Plate 386 No. 1 Dusky duck. Anas Obscura, Gm. 1. Male; 2. Female Drawn from nature by J.J. Audubon, F.R.S. F.L.S. / Chromolithy. By J. Bien, New York 1860 Image of a male and female duck.
Reserve 1860 PPF
Audubon, John James, 1785-1851, artist and Bien, Julius, 1826-1909, lithographer, “Dusky Duck. ,” Audubon's Birds of America, accessed January 15, 2021, https://americanantiquarian.org/birdsofamerica/items/show/214.