BLACK-NECKED SWAN 55 



pecially over the back, have a curled or ruffled appear- 

 ance, instead of lying smoothly against the body. It 

 is entirely black except for certain white wing-feath- 

 ers, and the bill and eyes are red. 



Two species of Swan are found in North America, 

 the Trumpeter, so called from its loud, sonorous call, 

 and the Whistling Swan. The former species is now 

 exceedingly rare. Both species breed in the Arctic 

 regions and migrate southward to the Gulf coast. 

 For some reason they have never thriven in confine- 

 ment. In both forms the plumage is white; the bill 

 and feet are black; and the Whistling Swan is dis- 

 tinguished by a small yellow spot on each side of the 

 bill. The young of all white Swans are greyish or 

 brownish in tone until maturity. 



In South America is found the Black-necked Swan, 

 a striking-looking bird with pure white plumage, ex- 

 cept for the black neck. The beak in this species is 

 provided with a conspicuous scarlet wattle- — a charac- 

 ter lacking in the North American Swans, but found 

 in the European forms. 



