\ 



/ 



) 



? 



\ 

 \ 

 I 



Annual Number of Migrating Mallards 

 501,000-1,000,000 



'jyft'J 251,000-500,000 



[■•;.:■;.:] 76,100-250,000 



1 I 10,000-26,000 



* Banding Location 



Figure 19. Mallard migration corridors in relation to banding 

 locations of mallards harvested in the lower Yellowstone River Basin 

 in 1973 through 1975. 



52 



