COLYMBID&. 709 
THE GREAT NORTHERN DIVER. 
COLYMBUS GLACIALIS, Linnzeus. 
This fine bird (sometimes called the Immer- or Ember-Goose) is 
the largest of the three Divers which regularly occur in British 
waters. The young generally come close to the shore, and are 
therefore more frequently obtained on our estuaries and in our 
narrow seas than the adults; the latter being, however, occasionally 
abundant off South Devon and Cornwall, and all round Ireland, 
especially in the west. They occur along the west of Scotland, even 
as late as the month of June, and from the north of the last country, 
indeed, they are seldom long absent ; while there have been grounds 
for surmising that a pair or two may have bred occasionally in 
the Shetlands, where adults have been observed during summer. 
There are many instances of the occurrence of this species during 
migration on lakes and meres in various parts of the United King- 
dom. 
In winter the Great Northern Diver is found along the Atlantic 
