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His experiments showed that swallowtailed moth pupae were camouflaged to match the backgrounds on which they were reared as larvae.

was at that time considered to be the main method of camouflage, as when Frank Evers Beddard wrote in 1892 that "tree-frequenting animals are often green in colour.

Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see (crypsis), or by disguising them as something else (mimesis).

Examples include the leopard's spotted coat, the battledress of a modern soldier, and the leaf-mimic katydid's wings.

Some animals, such as chameleons and octopuses, are capable of actively changing their skin pattern and colours, whether for camouflage or for signalling.Grouse, if not destroyed at some period of their lives, would increase in countless numbers; they are known to suffer largely from birds of prey; and hawks are guided by eyesight to their prey, so much so, that on parts of the Continent persons are warned not to keep white pigeons, as being the most liable to destruction.Hence I can see no reason to doubt that natural selection might be most effective in giving the proper colour to each kind of grouse, and in keeping that colour, when once acquired, true and constant.Patterns derived from military camouflage are frequently used in fashion clothing, exploiting their strong designs and sometimes their symbolism.Camouflage themes recur in modern art, and both figuratively and literally in science fiction and works of literature.

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