A fowl of the genus Colymbus and order of ansers. It is larger than the common goose; the head is dusky; the back, coverts of the wings and tail, clouded with lighter and darker shades of the same; the primaries and tail are black; the breast and belly silvery. It inhabits the northern regions, about Iceland and the Orkneys.

The loon or great northern diver. See Loon.