In the white wilderness of Canada in winter, Snowy Owl is the most fascinating bird: white on white, like a ghost, alone in the frozen winter and the snow storms. During six weeks, I went to Canada, for the quest of Snowy Owl to photograph in their winter environment, without bait. It took me a lot of patience to find their location, to understand and to study their daily behavior, their moves, and with a lot of patience, I succeed to approach some of them.