. The descent of man, and selection in relation to sex. Evolution; Heredity; Human beings; Natural selection. CHAP. XIII.] LAIV OF BATTLE. ^,81 have occurred the river is covered for some distance with ;^ Birds which seem ill-adapted for fighting engage in fierce conflicts; thus the stronger males of the pelican drive away the weaker ones, snapping with their huge beaks and giving heavy blows with their wings. Male snipe fight to-. Fig. 37.—The Ruff or Machetes pugnax (from Brehm's "Thierleben "). gether, *'tugging and pushing each other with their bills in the most cur
. The descent of man, and selection in relation to sex. Evolution; Heredity; Human beings; Natural selection. CHAP. XIII.] LAIV OF BATTLE. ^,81 have occurred the river is covered for some distance with ;^ Birds which seem ill-adapted for fighting engage in fierce conflicts; thus the stronger males of the pelican drive away the weaker ones, snapping with their huge beaks and giving heavy blows with their wings. Male snipe fight to-. Fig. 37.—The Ruff or Machetes pugnax (from Brehm's "Thierleben "). gether, *'tugging and pushing each other with their bills in the most curious manner ; Some few birds are believed never to fight; this is the case, according to Audubon, with one of the woodpeckers of the United States {Ficus aura- t7is), although <' the hens are followed by even half a dozen of their gay ; ^ * Sir R. Schomburgk, in "Journal of ® "Ornithological Riography," vol. i. p» Royal Geographical Society," vol. xiii. 1843, 191. For pelicans and snipes, see vol. ii(, p. 31. pp. 138, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York Hurst
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