AVES 



417 



broad, and they are good fliers. The ducks and geese spend 

 their winters in the tropics and nest in the colder regions. 

 They are much hunted by man during these migrations, when 



Fig. 216. 



■■'mmm^-mim. 



Fig. 216. V^\\c3.n {Pelecanus erylhrorhynchos). By Folsom. 



Questions on the figure. — What is the nature and purpose of the fold beneath 

 the jaw? To what division of the birds does the pelican belong? 



they frequent the streams and lakes of the temperate regions. 

 They are found the world over. There are said to be about 

 forty species and subspecies of ducks, eighteen species and sub- 

 27 



