PLATE XIX 
PERCENT AGREAGE -USE VALUE OF IO POTHOLE TYPES FOR 
THREE PHASES OF THE WATERFOWL BREEDING CYCLE: 
MINNEDOSA, MAN., 1949 (127 POTHOLES) 
3 
oe retetete 
ereterers 
OOK 
*' ‘erat atetetetetete. 
) etetetetetete eters’ 
SOOO IOOOX 
UNAUTAUUTOUNEOAUOMUAOOUOOAAAAAY 
+ 
rele 
~ 0,9! 

POTHOLE TYPE 
Percent Acreage- Use Value for Breeding Pairs 
Percent Acreage-Use Value for Diving Duck Nests 

Percent Acreage-Use Value for Brood Rearing 
INT.~DUP. SEC., WASH., D.Ce19y9 
