TABLE B-8. - -Waterfowl breeding population index, by species and stratum, 
southern Alberta, May, 1963 and 1964 
[Index numbers in thousands] 
Species 
Stratum 
Total 1 
Average 
1952 to 
Percent change 
from— 
A 
B 
C 
1963 
1964 
1964 
1963 
Average 
Ducks: 
Dabblers: 
Mallard- 
178 
546 
111 
739 
835 
916 
+3 
-9 
Gadwall- 
25 
67 
8 
85 
100 
85 
+18 
+18 
American widgeon - - 
53 
136 
22 
133 
211 
175 
+59 
+20 
Green-winged teal - - 
2 
20 
2 
15 
24 
39 
+63 
-38 
Blue-winged teal- 
24 
82 
6 
60 
112 
133 
+87 
-16 
Shoveler- 
59 
120 
30 
188 
209 
175 
+11 
+19 
Pintail- 
121 
62 
95 
348 
278 
569 
-20 
-51 
Subtotal- 
462 
1, 033 
274 
1,568 
1,769 
2, 092 
+13 
-16 
Divers: 
Redhead - 
7 
34 
3 
38 
44 
46 
+17 
-5 
Canvasback- 
8 
45 
3 
49 
56 
51 
+13 
+10 
Scaup- 
51 
179 
28 
261 
258 
244 
-1 
+6 
Ring-necked duck- 
— 
— 
— 
Tr 
Tr 
1 
_ 
— 
Goldeneye- 
Tr 
Tr 
— 
— 
~ 
3 
_ 
— 
Bufflehead- 
1 
14 
— 
14 
15 
18 
+7 
-14 
Ruddy duck- 
1 
14 
2 
10 
17 
19 
+68 
-10 
Subtotal - 
68 
286 
36 
373 
390 
382 
+5 
+2 
Miscellaneous: 
Scoter- 
Tr 
32 
— 
17 
32 
35 
+94 
-9 
Total ducks- 
530 
1,351 
310 
1, 958 
2,191 
2, 509 
+12 
-13 
Geese: 
Canada goose- 
3 
— 
3 
2 
6 
4 1 
— 
— 
Coots- 
17 
59 
13 
61 
89 
87 
+45 
+1 
Grand total- 
550 
1,410 
326 
2, 021 
2,286 
2, 600 
+13 
-12 
1 Two-year average 1963-1964. 
57 
