Black-throated Diver (Gavia Arctica ) Bird Information
Black-throated Diver intermediate in size between Red-throated and Great Northern Divers. Breeds on larger lakes and winters offshore. In summer, largely black and white with two chequered ovals on back. In black-throated diver, Neck striped black and white with black foreneck. In winter, upperparts plain slate-brown in adult; slightly mottled in juvenile. White patch on rear flanks often obvious. Dark of crown extends below eye giving masked effect.
Status: scarce breeder in the north and west Scotland. Winters along all shores, mostly in the west.