328 
VERTEBRATA. 
livino; cliiefly at sea, and diving with great ease, and remaining for a longtime under water. Dnring 
the breeding season they frequent 
islands and interior lakes andpools 
of fresh water, \Yhere they make 
their nests among reeds and flags 
some thirty or forty yards from 
the water's edge. The eggs arc 
two to three. Their wings arc 
short, but their flight is strong 
and rapid. They prefer, how- 
ever, to dive rather than take 
wing. Their legs are placed so 
far behind that they cannot walk 
npon them; still they shove 
themselves along on the ground 
by jerks, rubbing the breast on 
the ground. They make a reg- 
ular path from the water to their 
nests. 
The Great Northern Diver 
or LooN, O. fflacialis, thirty-two 
inches long ; ranges from 28° 
to 70° north latitude, and is com- 
mon to both Europe and Am- 
erica. (See p. 303.) 
The Blaok-throated I>iveb, 
C. arcticuSyh twenty-nine inches 
long; found in Europe and Afti- 
erica. 
The Reu-throated Diver, C. 
septen trionolis^ twenty-four in ch es 
long, is common in Europe and 
America. This is called Scape- 
Grace on our coast. 
Gemis XJRTA: Uria.—This 
includes the Guillemots^ resem- 
bling the divers : they are oce- 
anic birds, and swim and dive 
Avell, and thus are able to secure 
the small fishes and Crustacea on 
which they feed. 
Tlie Common Guillemot, U. 
troile — the WUlocJc or Tinkcr- 
shere of England — ^is eighteen 
inches long; lays a single egg, 
those of different birds differing 
in color; found in the northern 
regions of Europe and America. 
Accordino- to Yarrell this is the 
Foolish Guillemot of Pennant 
and others, so called because it 
allows itself to be taken by the 
THE ItBD-THUOATED DITEE. 
THE BLACK GUILLEMOT, 
hand in the breeding season ; it is the Murre of De Kay and Nuttall. 
