DescriptionWhite fowl lacking counter-shading from Thayer 1909.jpg
English: Figure 7, 'White fowl lacking counter-shading' from Thayer 1909. Thayer argued in the book that almost all animal coloration was for camouflage, principally via countershading.
Date
Source
own scan from Concealing-Coloration in the Animal Kingdom, 1909
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