Black-throated loon

The black-throated loon ("Gavia arctica"), also known as the Arctic loon and the black-throated diver, is a medium-sized member of the loon or diver family, the Gaviidae.
It is a migratory aquatic bird found in the northern hemisphere. It usually breeds in freshwater lakes in northern Europe and Asia. It winters along sheltered, ice-free coasts of the north-east Atlantic Ocean and the eastern and western Pacific Ocean.