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
2016 Arctic Winter Games for the naming of the mascot competition, the name "Kuluk" won and was appointed by the steering committee. 15 sport disciplines are scheduled in the 2018 Arctic Winter Games program. The 4 skiing sports are alpine skiing, biathlon, cross-country skiing and snowboarding. The 2 racquet sports are badminton and table tennis. The other 9 sports are Arctic sports, basketball, Dene games, Ice hockey, Indoor soccer, Primitive biathlon, Snowshoeing, Volleyball and Wrestling A number of events have been excluded to the programme due to the lack of facilities and expertise. At each Arctic Winter Games, the AWG International Committee presents the