SERIES 
F&WS 
SSR-W 
no.248 
Habitat Use and Productivity 
of Canvasbacks in Southwestern 
Manitoba, 1961-72 

UNITED STATES DEPARTMENT OF THE INTERIOR 
FISH AND WILDLIFE SERVICE 
Special Scientific Report— Wildlife No. 248 
~ > oe a p> A 
an oy . 
bes 37 eee 




