NATATORES I ANATID^E. 



269 



If the nest is 

 over water, the 

 young, the mo- 

 ment they are 

 hatched, drop 

 into the wa- 

 ter ; but if at 

 a distance from 

 it, they are al- 

 lowed to fall on 

 the ground, and 

 are then led, or 

 carried, to the 

 water by the 



Summer or Wood Duck, A. sponsa, Boie. 



Fuligulinae, or Sea Ducks, differ from the Anatinae in 

 having a large lobe or membranous flap attached to the 

 under surface of the hind toe. They are found inland 

 as well as on the sea-coast. 



The Genus Fulix has the bill as long as the feet ; head, 

 neck, body anterior to the shoulders, tail and tail-coverts, 

 rump, and lower back, black ; tail rounded, of fourteen 

 feathers ; under parts white, finely waved with black be- 

 hind and on the sides. 



The Big Black-Head, or Scaup Duck, F. marila, Baird, 

 of North America and Europe, is twenty inches long, and 

 the wing nine inches ; speculum white. The female has 

 the head brown. 



The Little Black-Head, or Blue-Bill, F. affinis, Baird, of 

 North America and Europe, is sixteen and a half inches 

 long, the wing eight inches ; similar to the preceding. 



The Ring-necked Duck, F. collaris, Baird, of North 

 America and accidental in Europe, is eighteen inches 

 long, and the wing eight inches, and is distinguished by 

 a chestnut collar around the middle of the neck. 



