164 THE UNIVERSITY OF THE STATE OF NEW YORK 



Chickadee in winter Nu Ci 



Chickadee in summer Nu Ci96 



Nuthatch in winter Nu NuW9 



Nuthatch in summer Nu NuW2 



Downy woodpecker in winter Nu WpD 



Downy woodpecker in summer Nu WpDS 



2 Migrants 



According to the extent of their migration, several groups of 

 migrants are recognized. 



a Winter residents; spend summer in far north, come south 

 as far as New York State in winter 



Tree sparrow Nu SpT 



Snow bunting Nu BuS6 



Lapland longspurs Nu Ln7 



Canvasbacks Nu Ca8 



Scaup ducks Nu DuSS 



b Summer residents: spend the nesting period in New York 

 State but migrate further south for the winter 



Bluebird Nu Bm 



Yellow warbler Nu WY 



Chipping sparrow Nu SpC3 



Baltimore oriole Nu OrB 



Red-eyed vireo Nu ViR 



c Transient visitants: spend the summer north of New York 

 State and the winter south of it, passing through on the 

 way 



White-crowned sparrow Nu SpW 



Pintail Nu Pnl 



Green-winged teal Nu TeG 



Canada goose Nu GpC 



Red-backed sandpiper Nu SQ 



d Irregular visitants : appear at irregular intervals, usually but 

 not always in winter. New York State being outside 

 their normal range 



Evening grosbeak 

 Cardinal 

 Sooty tern 

 Gull-billed tern 



3 Time of migration 



January is the only month when there is no migration ; spring 

 migration usually begins in February and continues until June. 



