134 BRITISH SEA BIRDS. 
time forward, to the following breeding-season, the 
Guillemot’s movements are to a certain extent 
unknown. As Professor Newton justly asks,* 
What becomes of the millions of Guillemots and 
other Auks that breed in northern latitudes? 
The birds that are met with round the coasts of 
temperate Europe, and elsewhere, bear no pro- 
portion whatever to the mighty hosts whose 
position and movements remain unrevealed. At 
present the only feasible explanation seems to be 
that the birds, during the non-breeding-season, are 
scattered in quest of sustenance over many 
thousands of square miles of water; in summer 
only is their vast abundance palpable, when all 
are gathered into a comparatively small area. 
In connection with the Guillemot mention should 
be made of the Ringed Guillemot, the U7za ringvia 
of Latham. It only differs from the Common 
Guillemot in having a narrow white band round 
the eye, which is prolonged into a streak for some 
distance behind and below it. It may be seen 
breeding in company with the commoner form, 
and is not known to differ in its habits. Whether 
it be a distinct species—as Géatke states—or 
merely a variety of the Common Guillemot, 
as many naturalists believe, still remains to be 
decided. 
* Dictionary of Birds, p. 399. 
