Birds of Canada. 115 



gray ; lower part of neck and entire under 

 plumage, pure white ; back and wings, grayish- 

 lead color. Breeds in Canada. Nests, in marshes; 

 eggs, three, of an olive-drab color. 



C. Philadelphia. Bonaparte's Gull. 



This well known gull is a summer resident of 

 Canada. Back and wings, clear bluish-gray ; 

 under plumage, rump and tail, white ; length, 

 fourteen inches. 



Rissa tridactyla. The Kittiwake Gull. 



The Kittiwake Gull occasionally visits Lake 

 Ontario during the fall. The head, neck, and 

 under plumage is pure white ; back and wings, 

 light bluish-gray ; bill, greenish-yellow ; legs, 

 brownish-black. 



Sub-Family STERIN/E. The Terns. 

 Sterna aranea. The Marsh Tern. 



This pretty tern is a regular visitor. Head, 

 black ; back and wings, light bluish-gray ; under 

 plumage, pure white ; bill, legs, and feet, black. 



6". caspia. The Caspian Tern. 



The Caspian Tern is a fall and winter visitor. 

 Head, black, glossed with green ; back and 



