1 
TABLE B-14.--Duck production index, by species, Oregon, 1963 and 1964 
[Comparative trends on 108.7 square miles] 
Species 
Number of broods 
Number of young 
1963 
1964 
1963 
1964 
Ducks: 
Dabblers: 
Mallard- 
165 
184 
1,068 
1,188 
Gadwall- 
67 
62 
551 
508 
American widgeon- 
1 
6 
7 
34 
Blue-winged teal 1 - 
110 
115 
718 
831 
Shoveler- 
4 
5 
25 
30 
Wood duck- 
— 
1 
— 
3 
Pintail- 
24 
13 
153 
89 
Subtotal- 
371 
386 
2,522 
2,683 
Divers: 
Redhead - - - - - 
82 
183 
604 
1,196 
Canvasback--- 
4 
2 
21 
15 
Scaup - 
6 
— 
33 
— 
Ruddy duck- 
102 
45 
559 
269 
Subtotal- 
194 
230 
1,217 
1,480 
Miscellaneous: 
Merganser- 
3 
2 
33 
12 
Unidentified- 
6 
11 
38 
54 
Total- 
574 
629 
3,810 
4,229 
1 Includes cinnamon teal. 
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