TABLE B-37. —Statewide breeding population 
species composition, Nebraska, 
1963 and 1964 
Species 
1964 
1963 
Change 
Ducks: 
Dabblers: 
Mallard- 
69,120 
38,641 
+30,479 
Gadwall- 
3,456 
17,235 
-13,779 
American widgeon- 
751 
147 
+604 
Blue-winged teal- 
23,043 
36,643 
-13,600 
Shoveler - - 
5,380 
5,078 
+302 
Pintail- 
21,886 
11,873 
+10,013 
Subtotal - 
123,636 
109,617 
Divers: 
Redhead - - - 
4,604 
2,664 
+1,940 
Canvasback- 
2,519 
1,104 
-4,415 
Scaup--- 
5,698 
1,104 
-4,594 
Ruddy duck - - 
882 
5,316 
-4,434 
Subtotal - 
13,703 
10,188 
Total- 
137,339 
119,805 
+17,535 
TABLE B-38. —Aerial duck production 
data, Nebraska Sandhills, 1964 
Stratum 
Total 
A 
B 
Number of Transects- 
48 
16 
64 
Square miles sampled- 
108 
36 
144 
Square miles in stratum - - 
10,869 
5,363 
16,232 
Number of broods seen- 
64 
17 
75 
TABLE B-39. —Duck brood composition, aerial 
survey, Nebraska Sandhills, 1964 
Age class 
Broods 
Ducklings 
Average 
brood 
Class I---- 
4 
17 
Class IX- 
27 
114 
Class III- 
32 
164 
Total- 
63 
295 
4.68 
75 
