Willow ptarmigan complicated changes in plumage several times a year and the differing colour and pattern of the summer plumage: The willow ptarmigan often hybridises with the black grouse ("Tetrao tetrix") and the hazel grouse ("Tetrastes bonasia") and occasionally with the western capercaillie ("Tetrao urogallus"), the spruce grouse ("Falcipennis canadensis") and the rock ptarmigan ("Lagopus muta"). During the Pleistocene, the willow ptarmigan widely occurred in continental Europe. Authors who recognize paleosubspecies have named the Pleistocene willow ptarmigan "L. l. noaillensis" (though the older name "medius" might be the correct one). These marginally different birds are said to have gradually changed from the
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