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Among animals, variable snow camouflage is a type of seasonal polyphenism with a distinct winter plumage or pelage. It is found in birds such as the rock ptarmigan, lagomorphs such as the Arctic hare, mustelids such as the stoat, and one canid, the Arctic fox. Since these have evolved separately, the similar appearance is due to convergent ...
The Arctic hare [2] (Lepus arcticus) is a species of hare highly adapted to living in the Arctic tundra and other icy biomes. The Arctic hare survives with shortened ears and limbs, a small nose, fat that makes up close to 20% of its body, and a thick coat of fur. It usually digs holes in the ground or under the snow to keep warm and to sleep.
Arctic hare - In Newfoundland and southern Labrador, the Arctic hare changes its coat color, moulting and growing new fur, from brown or grey in the summer to white in the winter, like some other Arctic animals including ermine and ptarmigan, enabling it to remain camouflaged as the environment changes. [2]
Cott's description and in particular his drawings convinced biologists that the markings, and hence the camouflage, must have survival value (rather than occurring by chance); and further, as Cuthill and Székely indicate, that the bodies of animals that have such patterns must indeed have been shaped by natural selection. [7]
Date: 26 December 2024: Source: Adapted form: Arctic Hare Lepus arcticus.Smith, A.T. & Johnston, C.H. 2019. Lepus arcticus. The IUCN Red List of Threatened Species ...
On a longer timescale, animals like the Arctic hare, Arctic fox, stoat, and rock ptarmigan have snow camouflage, changing their coat colour (by moulting and growing new fur or feathers) from brown or grey in the summer to white in the winter; the Arctic fox is the only species in the dog family to do so. [109]
European hare (above) compared with a mountain hare Stuffed mountain hare, showing the winter pelage The mountain hare is a large species, though it is slightly smaller than the European hare . It grows to a length of 45–65 cm (18–26 in), with a tail of 4–8 cm ( 1 + 1 ⁄ 2 –3 in), and a mass of 2–5.3 kg ( 4 + 1 ⁄ 2 – 11 + 3 ⁄ 4 ...
Camouflage is the concealment of animals or objects of military interest by any combination of methods that helps them to remain unnoticed. This includes the use of high-contrast disruptive patterns as used on military uniforms , but anything that delays recognition can be used as camouflage.