Crest (zoology)

Definition and stakes

Hans Gadow,  The Cambridge natural history, Vol… (1909)

“ The nuptial dress of the male is very striking. A high, serrated crest occurs on the head and body; the upper surface of the head is marbled with black and white; the under parts are orange-yellow with black spots, and the sides of the tail are adorned with a bluish-white band.–The female, always devoid of a crest, generally exhibits a yellow line along the middle of the back.–The average length of fully adult specimens is about 5-6 inches or 13-15 cm.; the females are as usual larger than the males; 144 and 162 mm. for an English male and female respectively are exceptional records. ”
Source: Gutenberg

Portrait of Henry Ogg Forbes Henry Ogg Forbes,  A Hand-book to the Primates — Semnopithecinae (1894)

“ Description.—A central occipital crest sloping at first backwards, reversed on the back of the head, black on the crown; with a lower indistinct crest on each side of the white forehead. General colour above dark grey—each hair being partly black and partly white; underneath, white; a black stripe from the upper jaw to the ear, and a black central stripe on the forehead; hands and feet black. (Collett.)
Very old males are darker in colour, with the upper part of the head brownish-black, the front whitish.
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Source: Wikisource

Portrait of Julian Huxley Julian Huxley,  Essays of a Biologist

“ The Crested Grebe is happily becoming more familiar to bird-lovers in England. Its brilliant white belly, protective grey-brown back, rippleless and effortless diving, long neck, and splendid ruff and ear-tufts of black, chestnut, and white, conspire to make it a marked bird. In the winter the crest is small, and even when fully grown in spring it is usually held close down against the head, so as to be not at all conspicuous. When it is spread, it is almost, without exception, in the service of courtship or love-making. ”
Source: Gutenberg

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