22 
Comparative data gathered during aerial surveys of the upper Columbia 
Valley are recorded in Table VI. These figures represent approximate total 
counts for this portion of the Rocky Mountain Trench - about 80 square miles, 
Table VI - Aerial Survey - Columbia Valley 


1950 1951 1952 
Ducks per square mile 19.9 10,1 12.0 
Canada geese per square mile 20.1 17.4 19.7 
Canada geese 1,612 1,395 1,575 
Swan 2 10 1 
Mallard 773 402 445 
Baldpate 167 83 155 
G-w. teal 24 - 14 
B-w. teal 83 7 1 
Canvasback 27 3 = 
Scaup 18 9 53 
Goldeneye 79 97 65 
Bufflehead 2 21 9 
Others 49 33 88 
Unidentified 376 135 130 
Total ducks 1,598 790 960 
Ground surveys of selected sample areas in the Okanagan Valley, made 
during early June, are recorded in Table VII. 
Table VII - Comparative Counts- Okanagan Valley - Spring 

Species 1950 1951 1952 
Mallard 45 27 12 
Pintail 9 1 = 
Baldpate 6 6 3 
Gadwall 18 10 13 
G-w. teal 3 - 4 
B-w. teal 22 3 2 
Redhead 86 150 67 
Lesser scaup 49 12 7 
Goldeneye 4 - 2 
Bufflehead 6 - 1 
Others 76 19 40 
Total ducks 270° 179 151 
Total Coot 157 70 69 
Examination of breeding population data from all the sample areas in the 
Province showed a small decrease in the number of ducks and a small increase in 
the number of geese on the breeding grounds. 
