During the breeding season , they live on lakes and other waterways in Canada , the northern United States ( including Alaska ) , as well as in southern parts of Greenland and Iceland .
The sexes look alike , though males are significantly larger and heavier than females .
During the breeding season , sexes live on lakes and other waterways in Canada , the northern United States ( including Alaska ) , as well as in southern parts of Greenland and Iceland .
The sexes look alike , though males are significantly larger and heavier than females .