TABLE B-6. --Waterfowl breeding population indexes by species and stratum, southern Alberta, May, 1964 and 1965 
[Index numbers in thousands] 
Species 
Stratum 
Total 
Average 
Percent change 
from-- 
A 
B 
C 
1964 
1965 
1952-65 
1964 
average 
Ducks: 
Dabblers: 
Mallard- 
82 
216 
835 
835 
335 
874 
-60 
-62 
Gadwall -- 
14 
42 
4 
100 
60 
77 
-40 
-22 
Baldpate- 
16 
33 
5 
211 
54 
167 
-74 
-68 
Green-winged teal- 
4 
10 
— 
24 
14 
37 
-42 
-62 
Blue-winged teal- 
21 
55 
2 
112 
78 
129 
-30 
-39 
Shoveler -- 
39 
45 
11 
209 
95 
170 
-55 
-44 
Pintail -...— 
148 
101 
94 
278 
343 
552 
+23 
-39 
Subtotal- 
324 
502 
153 
1769 
979 
2006 
-45 
-51 
Divers: 
Redhead--- 
2 
27 
1 
44 
30 
45 
-32 
-33 
Canvasback - 
7 
33 
Trace 
56 
40 
50 
-29 
-20 
Scaup - 
25 
99 
9 
258 
133 
236 
-48 
-44 
Ring-necked duck- 
1 
2 
Trace 
Trace 
3 
1 
-- 
Goldeneye- 
Trace 
Trace 
— 
— 
Trace 
— 
-- 
— 
Bufflehead- 
Trace 
10 
-- 
15 
10 
17 
-33 
-41 
Ruddy duck-- 
1 
6 
Trace 
17 
7 
18 
-59 
-57 
Subtotal--- 
36 
477 
10 
390 
223 
367 
-43 
-39 
Miscellaneous: 
Scoter- 
Trace 
18 
2 
32 
20 
34 
-37 
-41 
Total ducks- 
360 
697 
165 
2191 
1222 
2407 
-44 
-49 
Geese: 
-25 
Canada goose- 
— 
6 
— 
r 
CJI 
o 
Coots- 
9 
36 
2 
89 
37 
84 
-47 
-44 * 
Grand total- 
371 
733 
168 
2286 
1272 
2495 
-44 
-49 
