Birds of Canada. if 
wings, light bluish ash; under plumage, pure 
white; bill, and inside of mouth, bright red ; 
legs and feet, black; tail, forked. Breeds in the 
northern regions. 
S. Wilsoniz—Wilson’s Tern. 
This is the most common species in Canada. 
Head, deep black, tinged with brown; back and 
wings, light grayish blue; breast and abdomen, 
clear pearl gray. Breeds on the sea coast of New 
Brunswick. 
ARCTIC TERN. 
S. arctica —The Arctic Tern. 
The Arctic Tern is a fall and winter visitor 
in Ontario. Breeds on the sea coast of Nova 
Scotia. Head and neck black ; back and wings, 
