GULLS. 



89 



57. IVORY GULL. 

 Medium, 19, Pure white; fig. 62. Young, 

 more or less spotted with dusky. Breeds very 



Fig. 60. 



American Herring Gull. 1-8. Young in flight. 



far north. South regularly to Labrador and 

 Newfoundland; casually to N. B. and Mass. 



58, KITTIWAKE GULL. 

 Medium, 17; mantle pale; whitfe below, 

 on tail and head; bill yellow, feet black; five 

 outer quills have the ter- 

 minal portions black, 

 forming a patch the in- 

 Bonaparte Gull. 1-2. ner outline of which goes 

 staright across the wing, fig. 63 and plate 2. 



Fig. 61. 



