5. Ths glaciated plains regions of the State were seemingly mor. attractive 
to waterfowl than ths unglaciated areas. The percent of occupied water for each 
classification did not vary excessively between arsas in any but the intermediate 
class, 
6. average ot lone water arsa for each 8.95 squars miles was found by 
esnsusing 2,436 square miles in the northern glaciated prairie region. 
7. About 80 percent of the water arsas in the Sheridan County terminal 
moraines area dried up. between May 2/4 and August 24, 1949. 
' { 
8. With the sxception of the redhead in the Flathead Valley and the scaup 
in the Blackfoot Valley, the principal breeding ducks in their order of importance 
were as follows: Mallard, pintail, blue-winged teal, shoveler, baldpate, and 
gadwall. 
9. By combining all of the brood data, there was an average of 6.8 ducklings 
per brood in Class I and 5.1 ducklings in Class III. This gives a 25 percent 
mortality for all species combined, between the time of hatching and the approxi- 
mate tims of flight. 
10. During this first year's study, banding was incidental to other wofk. 
Two hundred and seven ducks wers banded. 
135 
