Archive image from page 443 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele1874darw Year: 1874 Fig. 45. Secondary win-feathers of Pipra ddldosa (from Mr. Solater, in Proo. Zool. Soc,' 1860. The three upper feathers, a, b, c, from the male; the three lower corresponding feathers, d e,/, from the female. a and d, fifth secondary wing-feather of male and female, upper surface. b and e, sixth secondary, upper surface. c and/, seventh secondary, upper surface. season, and the diversity of th means for producing such sounds, are highly remarkable. W
Archive image from page 443 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele1874darw Year: 1874 Fig. 45. Secondary win-feathers of Pipra ddldosa (from Mr. Solater, in Proo. Zool. Soc,' 1860. The three upper feathers, a, b, c, from the male; the three lower corresponding feathers, d e,/, from the female. a and d, fifth secondary wing-feather of male and female, upper surface. b and e, sixth secondary, upper surface. c and/, seventh secondary, upper surface. season, and the diversity of th means for producing such sounds, are highly remarkable. We thus gain a high idee of their importance for sexual purposes, and are reminded of the conclusion arrived at as to insects. It is not difficult to imagine the steps by which the notes of a bird, primarily used as a mere call or for some other purpose, might have
Size: 785px × 2547px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1800, 1870, 1874, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, darwin_charles_1809_1882, drawing, evolution, heredity, historical, history, human_beings, illustration, image, natural_selection, new_york_a_l_burt, page, picture, print, reference, sex_differences, sexual_dimorphism_animals_, sexual_selection_in_animals, vintage
