The diver Gavia arctica (family Gaviidae), breeding chiefly in northern Eurasia, having (in the breeding season) a grey head, black throat, and chequered back; also called (in US) Arctic loon.
Origin
Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer.
Definition of black-throated diver in US English:
black-throated diver
noun
The diver Gavia arctica (family Gaviidae), breeding chiefly in northern Eurasia, having (in the breeding season) a grey head, black throat, and chequered back; also called (in US) Arctic loon.
Origin
Late 18th century; earliest use found in Thomas Pennant (1726–1798), naturalist, traveller, and writer.