1909.] THE CAYUGA LAKE BASIN, N. Y. 415 



134 (144). Aix sponsa (Linn^us). Wood duck. 



Summer resident but not as common as formerly. It still breeds 

 in small numbers at Cayuga. During the summer of 1907 a pair 

 nested in the woods of the Renwick marshes at Ithaca. 



135 (146). Marila americana (Eyton). Redhead. 



Common transient and regularly present in winter. In the spring 

 it is common from the middle of March throughout April. In the 

 fall it is found during October and November. 



136 (147). Marila vallisneria (Wilson). Canvas-back. 

 Common transient and a regular winter visitant in smaller num- 

 bers from the middle of November to the last of March. 



137 (148). Marila marila (Linnaeus). American scaup duck. 

 Winter resident from the first of October to the very last of 



April. It is more common during migration. 



138 (149). Marila afRnis (Eyton). Lesser scaup duck. 

 Common transient. A few are occasionally found in winter. 



They arrive in the fall the first of October and remain until the 

 middle of November. In the spring they are to be found from 

 April I to June 24, the latest date. 



139(150). Marila collaris (Donovon). Ring-necked duck. 



Usually a rare transient. Foster Parker reports it as common 

 during the spring of 1905 at the north end of the lake. 



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

 Common winter resident from November i to April i. 



141 (152). Clangula islandica (Gmelin). Barrow's golden-eye. 

 Rare. One specimen, an adult female, taken at Cayuga by L. A. 



Fuertes, December 20, 1906. (Coll. of L. A. F., no. 1523.) 



142 (153). Charitonetta albeola (Linnaeus). Buffle-head. 

 Common transient. It appears in the spring from the middle of 



April to the last of May. In the fall arrivals from the north appear 

 usually the second week in October and remain until the last of 

 November. 



143 (154). Harelda hyemalis (Linnaeus). Old-squaw. 

 Common transient and not uncommon in winter. They arrive 



the middle of October and remain until the first of May. 



