Coloration evidence for natural selection J. Bowler wrote that Darwin's theory In his 1889 book "Darwinism", the naturalist Alfred Russel Wallace considered the white coloration of Arctic animals. He recorded that the Arctic fox, Arctic hare, ermine and ptarmigan change their colour seasonally, and gave "the obvious explanation", that it was for concealment. The modern ornithologist W. L. N. Tickell, reviewing proposed explanations of white plumage in birds, writes that in the ptarmigan "it is difficult to escape the conclusion that cryptic brown summer plumage becomes a liability in snow, and white plumage is therefore another cryptic adaptation." All the same, he notes, "in spite
Arctic Winter Games the first Arctic Winter Games. The participants came from the Northwest Territories, Yukon and Alaska. Since then, the Games have been held on fifteen occasions in different places and with ever more participants from more and more places within the Arctic region. The games in 2002 were the first jointly hosted Arctic Winter Games, by Nuuk, Greenland and Iqaluit, Nunavut. Games include: A total of nine contingents participated in the Arctic Winter Games. The same group of teams also made up the participants of the previous games Host cities have mostly been in Canada and the United States. The Hodgson