Portraict des of de l'oyseau - Public domain book illustration, Library of Congress

Bird skeleton with bones lettered for comparison with human skeleton; partial key at bottom.
Illus. in: L'histoire de la nature des oyseaux / Pierre Belon. Paris : G. Cauellat, 1555, p. 41.
Published in: The tradition of science / Leonard C. Bruno. Washington, D.C. : Library of Congress, 1987, p. 82.