COMMON GUILLEMOT. 



PYGOPODES. 



69 

 ALCID.E. 



Uria troile (Linnseus*). 

 THE COMMON GUILLEMOT, 



WILLOCK, OR TINKERSHERE. 



Uria troile. 



Uria, Brisson\. — Bill of moderate length, strong, straight, pointed, com- 

 pressed ; upper mandible slightly curved near the point, with a small indenta- 

 tion or notch in the edge on each side. Nostrils basal, lateral, concave, pierced 

 longitudinally, partly closed by membrane, which is also partly covered with 

 feathers. Feet short, placed behind the centre of gravity in the body ; legs 

 slender, feet with only three toes, all in front, entirely webbed. Wings short, 

 first quill-feather the longest. Tail short. 



The Common Guillemot so closely resembles the Razor- 

 bill in the localities it frequents ; in the time of its move- 

 ments ; in its manners, habits, and food ; in its general 



* Colymhus Troile, Linnteus, Syst. Nat. Ed. 12, i. p. 220 (1766). 

 t Ornithologie, vi. p. 70 (1760). 



