A compariacn of species composition in May 1948 and 1949 1s given below: 
Percent of the Duck Poputation 
1942 1949 
Scaup a2 11 
Blue-winged teal al 6 
Mallard 15 15 
Redhead 10 & 
Pinteail & 6 
Ruddy 5 4 
Gadwall 5 & 
Baldpate 4 4 
Shoveler 4 6 
Other 6 
er 1004 
We found 21 breods on the 16 areas which were checked intensively or 
1,3 broods per area. Humber of areas per cection averaged nearly 10. 3rooda 
per aqueare mile, uaing these figures, would average 13. 
Ae in 1948, the lakes composing the Pembina chain were inventoried. The 
1948 sonnt was 2,800, this year 1,120. These lakes are used primarily for 
Treating, oot for breeding. A reduction in numbers of ecaup passing through 
the area accounts for most of the 1949 decrease. 
Pistrict 7? 
Total coverage in this diatrict wae 99.25 square miles, or 3.1 percent. 
Ground transects showed &.2 ducks per square mile in 1949 compared to 3.1 in 
1948. Aerial transects chowed 4.3 ducks per aquare mile in 1949, and 2.5 in 
1948. Both methode agree that this year's increase was about 7O percent, A 
decline of 24 percent was recorded from the May to the June counts. Maellarde 
and blue-winged teal were the only speciee occurring in densities exceeding 
1 per square mile (1.5 and 1.7). 
Because of the Low densities found, no production survey was attempted. 
District @ 
Total sampled along all the transects: 130 square miles, which je 
3.€ percent of the entire district. Ducks per souare mile in ground: 81.4; 
mir: 63.0. Compare these figures with those for 194%! (ground: 36.8); alr, 
26.4) and the rate of improvement falls between 125 and 140 percent. 
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