Archive image from page 58 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele187302darw Year: 1873 Chap. XIII] LAW OF BATTLE. 45 of the wing becomes more prominent during the breeding- season, and the males are known to fight together. In Fig. 38.—Palamedea cornuta (from Brehm), showing the double-wing-spurs, and the filament on the head.

---

Size: 1227px × 1630px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage