Henry Constantine Richter (1821-1902). In John Gould, A Monograph of the Trochilidae or Family of Hummingbirds, 5 Volumes (1849-1861). Courtesy of the Thomas Fisher Rare Book Library, University of Toronto.

Barn Owl from Gould's The Birds of Europe 5 volumes. Courtesy of the Thomas Fisher Rare Book Library, University of Toronto.