BIRDS OF NELSON COUNTY. 51 



Genus Anas. 



166. Anas boscaslAN-^ . Mallard. 

 Transient ; common. 



Genus duerquedula. 



167. Querqueduk discors (Linn.). Blue-winged Teal. 

 Transient ; common. The last of the ducks to pass north- 

 ward in the spring. 



Genus Nettion. 



168. Nettion carolinensis (Gmel.). Green-winged Teal. 

 Transient ; common. By one of those slips that happen 

 to all of us, this duck was omitted from the former list. 



Genus Aix. 



169. *Aix sponsa (Lm-N.). Wood Duck. Summer Duck. 

 An iincommon summer resident. 



Genus Fuligula. 



170. Fuligula collaris (Donov.). Ring-billed Blackhead. 

 The only time I have ever met with this duck was on 

 February 16, 1883, when a solitary female was shot on a 

 small pond in a woodland. 



Order PYGOPODES : Diving Birds. 



Family PODICIPEDIDiE : Grebes. 



Genus Podilymbus. 



171. Podilymbus podiceps ( Linn. ). Thick-billed Grebe. " Di- 

 dapper." " Helldiver." 

 Transient ; common on the streams and ponds in early 

 spring. 



