Black-throated loon
The black-throated loon is a migratory aquatic bird found 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. There are two subspecies: a viridigularis Gavia arctica and the black diverated gavia arcticus. The population of this loon has been declining, but it is still rated as...