. The descent of man : and selection in relation to sex . Evolution; Natural selection; Heredity; Human beings. DISPLAY BY THE MALE. 389 occasionally occurs with grouse at their balz-places, and as may be noticed with the peacock; this latter bird, however, evidently wishes for a spectator of some kind, and, as I have often seen, will show off his finery before poultry, or even pigs.'" All natu- ralists who have closely attended to the habits of birds, whether in a state of nature or under confinement, are unanimously of opinion that the males take delight in displaying their beauty. Audu
. The descent of man : and selection in relation to sex . Evolution; Natural selection; Heredity; Human beings. DISPLAY BY THE MALE. 389 occasionally occurs with grouse at their balz-places, and as may be noticed with the peacock; this latter bird, however, evidently wishes for a spectator of some kind, and, as I have often seen, will show off his finery before poultry, or even pigs.'" All natu- ralists who have closely attended to the habits of birds, whether in a state of nature or under confinement, are unanimously of opinion that the males take delight in displaying their beauty. Audubon frequently speaks of the male as endeavoring in various ways to charm the female. Mr. Gould, after describing some. Fig. 50. Rupicola crooea, male (T. W. Wood). peculiarities in a male humming-bird, says he has no doubt that it has the power of displaying them to the greatest advantage before the female. Dr. Jerdon™ insists that the beautiful plumage of the male serves "to fascinate and attract the ; Mr. Bartlett, at the Zoological Gardens, expressed himself to me in the strongest terms to the same effect. '^ See also 'Ornamental Poultry,' by Rev. B. S. Dixon, 1848, p. 8. *« 'Birds of India,' -'jitroduct. vol. i. p. xxiv.; on the peacock, vol. iii. p. 507. See Gould's 'Introduction to the Trochilidae,' X861, pp. 15 and 111. 26. 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 : Merrill and Baker
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