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Caption: The cactus-feeding finches (Cactornis scandens), by John Gould (1804 -1881). Seeing the image of the specialized beaks of these finches suggested evolutionary possibilities to Darwin. From Darwin and the Beagle by Alan Moorhead, page 200.
Credit: Album / TopFoto
Image size: 2477 × 3611 px | 25.6 MB
Print size: 21.0 × 30.6 cm | 975.2 × 1421.7 in (300 dpi)