Feather

Definition and stakes

Douglas Dewar,  Birds of the Plains

“ It is that of the moon rather than of the sun, of the violet rather than of the rose. The exquisite shades of its plumage cannot be fully appreciated unless minutely inspected. Every feather is a triumph of colouring. No description can do the bird justice. ”
Source: Gutenberg

Various,  Encyclopaedia Britannica, 11th Edition…

“ FEATHER (O. Eng. fether, Ger. Feder, from an Indo-European root seen also in Gr. πτερόν, and πέτεσθαι, to fly) , a horny outgrowth of the skin of birds homologous with the scale of the reptile. The body-covering of birds is, without exception, comprised of feathers, and by this character alone birds may be distinguished from all other animals.
The most perfect form of feather is made up of a long, tapering rod, fringed on either side, for the greater part of its length, by a secondary series of slender and tapering rods forming a more or less acute angle with the central axis.
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Source: Gutenberg

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