KEEL-BREASTED BIRDS. 



241 



the mother of the British guillemot takes the young on its 

 back and carries it to sea on the first voyage. Under 

 water the wings are used as in flying. Allied are the 

 Puffins (Fratercula) (Fig. 280, 4), that have short, deep, 



FlG. 280. A group of sea-birds, i, cormorant ; 2, black-winged tern ; 3, 

 gulls ; 4, puffins ; 5, guillemots. 



wedge-shaped bills. The common puffin, or sea-parrot 

 (F. Arctica), is common on the North Atlantic coast, at- 

 taining a length of thirteen and a half inches. Their 

 nests are tunnels in the ground, at the extremity of which 



