252 DUCKS. 



range and migration similar to last.. In 

 swimming all Scoters frequently hold tail 

 upright, as does the Ruddy Duck. They 

 often associate together in great flocks; 

 when a small number are together they fly 

 in line one behind the other close to the 

 water, but when in large flocks will some- 

 Fig. 199 



Lesser Snow Goose. 1-J8. 



times fly higher and in a more confused 

 manner; all are apt to fly into the months 

 of estuaries at low tide to feed upon mussels. 



227. RUDDY DUCK. 



Smaller, 15; neck and upper parts, 

 chestnut. Top of head, black, spot on its 



