noun
black-throated loon; Arctic loon
A species of loon (Gavia arctica). Ornithological term; in everyday contexts, the katakana name is used.
オオハムは北極圏で繁殖する水鳥です。
The black-throated loon is a waterbird that breeds in the Arctic.
The name オオハム likely derives from 大 (large) and ハム, an old name for loons or grebes, but the exact origin is uncertain.