28 



144. *Aix sponsa (Linnaeus) — Wood Duck. 



Largely confined to the eastern half of the state; formerly com- 

 mon, now somewhat rare. Breeds in suitable localities throughout 

 eastern Nebraska. Arrives in spring early in April and last seen 

 about the middle of October. 



146. Aythya americana (Eyton) — Red-head. 



An abundant migrant, arriving early in March, remaining till the 

 first of May, and here again throughout October and November. Al- 

 though Nebraska is at the southern limit of its breeding range, a 

 considerable number, stay regularly in the sand-hill region and doubt- 

 less breed. 



147. *Aythya vallisneria (Wilson)— Canvas-back. 



Rather an irregular migrant, some years abundant, others less 

 common. Found in spring from late in February to the middle of 

 April, and in the fall during October and November. Breeds chiefly 

 from North Dakota northward, but a few are seen in summer about 

 the lakes of Cherry county, where they are known to breed. A nest 

 with eggs advanced in incubation was found near Cody, in northern 

 Cherry county, by I. S. Trostler in the latter part of June, 1895, and 

 J. M. Bates reports the Canvas-back as breeding at Irwin in 1896 

 and 1897, and at Hackberry lake in 1897. 



148. Aythya marila (Linnaeus) — Scaup Duck; Blue-bill. 



A rare migrant, though formerly more common, and most frequent 

 along the Missouri river. Omaha, Lincoln, Peru, West Point, Neligh, 

 Cherry county. Breeds to the northward. 



149. Aythya affinis (Eyton) — Lesser Scaup; Little Blue-bill. 



An abundant migrant, seen from the middle of March even to the 

 latter part of May and from early in October to the end of November. 

 Breeds from North Dakota northward, but a few remain about the 

 lakes of Cherry county all summer and it may breed there. 



150. Aythya collaris (Donovan) — Ring-necked Duck. 



A common migrant, being found at the same time as the preced- 

 ing. It is present in Cherry county throughout the summer and 

 may breed. 



151. Clangula clangula americana (Bonaparte) — Golden-eye. 



A resident from the northen boundary of the United States north- 

 ward, only coming down to us during the winter, when it is not un- 

 common, especially on the Platte and Missouri rivers. Seen from 

 the middle of November to the end of March, sometimes lingering to 

 the end of April. 



152. Clangula islandica (Gmelin) — Rocky Mountain or Barrow Golden- 



eye. 

 A rare winter visitant in eastern Nebraska, more numerous west- 



