TABLE B-64. —Waterfowl breeding population, southwest Manitoba, 
May 1963 and 1964 
Species 
1963 
1964 
Percent change 
from 1963 
Ducks: 
Dabblers: 
Mallard- 
332 
375 
+13 
Gadwall- 
43 
92 
+111 
American widgeon- 
64 
75 
+17 
Green-winged teal- 
24 
35 
+46 
Blue-winged teal- 
374 
651 
+74 
Shove ler- 
111 
243 
+112 
Pintail- 
147 
239 
+63 
Subtotal- 
1,095 
1,710 
+56 
Divers: 
Redhead- 
53 
107 
+102 
Canvasback- 
58 
99 
+71 
Scaup - 
64 
70 
+25 
Ring-necked duck- 
6 
19 
+317 
Goldeneye- 
3 
14 
+467 
Bufflehead- 
4 
4 
_ 
Ruddy duck- 
35 
34 
-3 
Subtotal- 
223 
347 
+55 
Unidentified ducks- 
— 
4 
— 
Total ducks- 
1,318 
2,061 
+56 
TABLE B-65.—Lone drake index, southwest Manitoba, 1960 to 1964 
[ Expressed as percentage of total drakes] 
Year 
Mallard 
Pintail 
Canvasback 
May: 
I960 - 
78 
1961- 
45 
34 
— 
1962 - 
57 
72 
42 
1963 - 
75 
67 
73 
1964 - 
69 
65 
61 
89 
