Image: Descent of Man - Burt 1874 - Fig 39
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Description: Scan of Figure 39, from Darwin's Descent of Man, second edition. Shows Greater Prairie Chicken Tympanuchus cupido (labelled Tetrao cupido in image) male displaying to females with inflated vocal sacs, raised crest and tail, and spread wings.
Title: Descent of Man - Burt 1874 - Fig 39
Credit: The Descent of Man, And Selection in Relation to Sex, by Charles Darwin. Reprinted from the Second English Edition, Revised and Augmented, A. L. Burt Company, New York. 1874. Page 422. Image scanned by User:Davepape
Author: T. W. Wood
Permission: PD-old assumed
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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