Audubon, Golden Eagle, 1833–4
John James Audubon (Jean-Jacques Audubon) (April 26, 1785 - January 27, 1851) was a French-American ornithologist, naturalist, and painter. He was notable for his expansive studies to document all types of American birds and for his detailed illustrations that depicted the birds in their natural habitats.
Audubon, White Gyrfalcons
His major work, a color-plate book entitled The Birds of America (1827-1839), is considered one of the finest ornithological works ever completed. Audubon identified 25 new species.
In this image: John James Audubon (1785?1851), Northern Bobwhite (Colinus virginianus) and Red-shouldered Hawk (Buteo lineatus), Study for Havell pl. no. 76, ca. 1825. Watercolor, pastel, graphite, black ink, oil, gouache, black chalk, collage, and outlining with a stylus on paper, with selective glazing on paper, laid on card; 25 13/16 x 39 3/8 in. (65.6 x 100 cm).
http://www.examiner.com/article/a-celebration-of-the-works-of-john-james-audubon