. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings; Sexual selection in animals; Sexual dimorphism (Animals); Sex differences. 410 THE DESCEIfT OF MAS. rich colors probably serves in chief part as an ornuinent. Like most pugnacious birds, they seem always ready to. fight, and when closely confined often kill each other; buu Montagu observed that their pugnacity becomes greatei during the spring, when the long feathers on their necb are fully developed; and at this period the least niovemeu'. Please note that these images are extracted f
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings; Sexual selection in animals; Sexual dimorphism (Animals); Sex differences. 410 THE DESCEIfT OF MAS. rich colors probably serves in chief part as an ornuinent. Like most pugnacious birds, they seem always ready to. fight, and when closely confined often kill each other; buu Montagu observed that their pugnacity becomes greatei during the spring, when the long feathers on their necb are fully developed; and at this period the least niovemeu'. 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 : A. L. Burt
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Keywords: ., bookcentury1800, bookdecade1870, booksubjecthumanbeings, bookyear
