Meaning of white-winged scoter in English:

white-winged scoter

noun

  • A large migratory scoter with a conspicuous patch of white on the wing, Melanitta deglandi, breeding in northern North America and Siberia.

    Melanitta deglandi is now often regarded as a subspecies of the velvet scoter, M. fusca, which breeds in northern Europe and Asia, and for which the name white-winged scoter is also sometimes used.

Origin

Late 19th century; earliest use found in Joel Asaph Allen (1838–1921).