Swans swim over a lake, with the air temperature at about minus 35 degrees Celsius (minus 31 degrees Fahrenheit) as steam ascends above the water during sunset near the village of Urozhainy, Sovetsky district of Altai region, January 26, 2015. About 600 swans annually migrate to the lake, which is heated by warm springs, where they spend their winter being fed by yagers, which help them to survive the severe cold. Picture taken January 26, 2015. REUTERS/Andrei Kasprishin (RUSSIA - Tags: ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY)