known in North America as Arctic Loon (Gavia arctica), is a medium-sized
member of the loon or diver family. It breeds in Eurasia and occasionally
in western Alaska. It winters at sea or on large lakes over a
much wider range. Breeding adults are 63 cm to 75 cm in length
with a 100 cm to 122 cm wingspan. They are like a smaller, sleeker
version of the Great Northern Diver. They have a grey head, black
throat, white underparts and chequered black-and-white mantle.
Non-breeding plumage is drabber with the chin and foreneck white.
Its bill is grey or whitish and dagger-shaped. In all plumages
a white flank patch distinguishes this species from all other
divers including the otherwise almost identical Pacific Diver.
This species, like all divers, is a specialist fish-eater, catching
its prey underwater. It flies with neck outstretched. The call
is a yodelling high-pitched wail.
Image Number 1 Is From Troyer, William
Images 2 Through 4 Are From The U.S. Fish and Wildlife Service
Image Number 5 Is From Alberts, S.
Image Number 6 Is From Bergman, Robert