TABLE JB-34. --Waterfowl breeding populations, by species and stratum. North Dakota, 
South Dakota, and western Minnesota, 1963 and 1964 
[index numbers in thousands] 
Stratum 
Total 
Average 
1 OCft 
Percent change from— 
Species 
East 
Central 
West 
1963 
1964 
lyoy to 
1964 
1963 
Average 
Ducks: 
Dabblers: 
Mallard- 
92 
163 
38 
480 
293 
286 
-38.8 
+2.4 
Gadwall- 
15 
38 
6 
163 
59 
60 
-64.4 
-1.7 
American widgeon - 
1 
2 
— 
4 
3 
10 
— 
-70.0 
Green-winged teal - 
— 
— 
— 
1 
— 
— 
— 
— 
Blue-winged teal - - 
66 
224 
19 
324 
309 
214 
-4.3 
+44.4 
Shoveler-- - 
16 
41 
9 
140 
66 
92 
-52.1 
-28.3 
Pintail- 
23 
60 
3 
165 
86 
147 
-47.3 
-41.5 
Subtotal- 
213 
528 
75 
1,276 
816 
809 
-35.8 
+ .9 
Divers: 
Redhead-- 
22 
23 
— 
39 
45 
25 
+17.9 
+80.0 
Canvasback - 
5 
16 
— 
17 
21 
12 
+16.7 
+75.0 
Scaup - 
3 
2 
— 
57 
5 
31 
-91.2 
-83.9 
Ring-necked duck - 
— 
— 
— 
9 
— 
2 
— 
— 
Ruddy duck-- 
— 
2 
— 
13 
2 
8 
+84.6 
-75.0 
Subtotal- 
30 
43 
— 
135 
73 
78 
-45.6 
-6.4 
Total ducks- 
243 
571 
75 
1,411 
889 
887 
-36.8 
+12 
Coots- 
36 
31 
-- 
95 
67 
92 
-29.5 
-27.2 
Grand total- 
279 
602 
75 
1,506 
956 
979 
— 
— 
TABLE B-35. —Lone drake index. North Dakota, 
South Dakota, and western Minnesota, 1959 to 1964 
73 
