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THE GREAT PIVER. 
Immer, Emmer, or Ember Goose Gunner ; Naak ; Sea 
Herds; Man; Cobble. 
The Black-throated Loon (C arcticus)^ known also 
as the Black-throated Diver. 
The Eed-throated Loon ((7. septentrionalis)^ called 
also the Red-throated, or Speckled Diver, the Sprat Loon. 
These are all three known as British birds ; the ; first is 
large, being about thirty-six inches in length ; the head 
and neck are deep bluish green, glossed with purple ; 
there is a patch on the throat, and a broad ring of 
white, incomplete in front, on the neck, crossed by 
streaks of black ; the upper parts are black ; the middle 
part and shoulders being marked with white spots, as 
are also the wings, there being two on each feather ; 
the lower neck is streaked black and white, which 
is the colour of the lower parts, with the exception of a 
dusky band across the abdomen. The numerous white 
spots upon a black ground, which cover the back and sides, 
give the bird a very remarkable appearance. Macgillivray 
describes the Great Diver as very common along the shores 
of the outer Hebrides, from the middle of spring to the end 
of IMay. They disappear in the beginning of June, or 
sometimes earlier, and do not reappear in autumn, or at 
least in the same plumage, for those seen in winter have no 
GREAT DIVER. 
