. 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. 448 THE DESCENT OF MAN. and blue wattles, makes a superb, though, to our eyes/ grotesque appearance. Similar facts have already beea given with respect to grouse of various kinds. Turning to another order. The male Rupicola crocea (fig. 50) is one of the most beautiful birds in the world, being of a splendid orange, with some of the feathers curiously truncated and. Fig. 50. Rupicola crocea, male (T. W. Wood). p
. 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. 448 THE DESCENT OF MAN. and blue wattles, makes a superb, though, to our eyes/ grotesque appearance. Similar facts have already beea given with respect to grouse of various kinds. Turning to another order. The male Rupicola crocea (fig. 50) is one of the most beautiful birds in the world, being of a splendid orange, with some of the feathers curiously truncated and. Fig. 50. Rupicola crocea, male (T. W. Wood). plumose. The female is brownish-green, shaded with red, and has a much smaller crest. Sir R. Schomburgk has described their courtship; he found one of their meeting- places where ten males and two females were present. The space was from four to five feet in diameter, and appeared to have been cleared of every blade of grass and smoothed (^s if by human hands ^ ?^^k J'was capering te th^. 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
