A common goldeneye duck paddles past a snowy bank and toward the reflection of a gnarled tree stump in Lake McDonald, part of Waterton-Glacier International Peace Park.

• 在沃特顿冰川国际和平公园的麦克唐纳湖里，一只白颊鸭经过积雪的河岸，向着扭曲的树状倒影游去。