TABLE B-60.--Comparison of duck broods, Wisconsin, 1964 
1964 
1950-56 1 
Species and class 
Number 
broods 
Number 
young 
Average number 
young brood 
Average number 
young brood 
Number 
broods 
Mallard: 
Age class I- 
15 
105 
7.0 
7.5 
64 
Age class II- 
31 
229 
7.4 
6.8 
147 
Age class DI- 
16 
86 
5.4 
6.4 
112 
Blue-winged teal: 
Age class I- 
9 
63 
7.0 
7.8 
119 
Age class 11- 
14 
92 
6.6 
7.2 
167 
Age class HI- 
2 
2 
2 
6.6 
48 
Wood duck: 
Age class I- 
8 
57 
7.1 
8.3 
23 
Age class n- 
20 
129 
6.5 
7.1 
32 
Age class DI- 
8 
46 
5.8 
5.3 
23 
1 Duck and Coot Ecology and Management in Wisconsin, 1964, Jahn, L. R., and R. A. Hunt, 
Wisconsin Conservation Department Technical Bulletin (In Press). 
2 Insufficient data available. 
TABLE B-61. --Wood duck broods observed by stream section and age class, Indiana, 1964 
Stream 
area 
Miles 
of 
transect 
Date 
censused 
1964 
Number of broods 
Total 
Percent 
change 
from 1963 
Age 
class I 
Age 
class II 
1963 
1964 
A 
B 
C 
A 
B 
C 
Maumee- 
15 
5/21 
_ 
3 
2 
1 
2 
1 
13 
9 
-30.8 
Elkhart- 
17 
5/20 
— 
2 
1 
— 
1 
— 
7 
4 
-42.9 
Iroquois - 
14 
6/3 
— 
1 
1 
1 
— 
— 
5 
3 
-40.0 
Minnissinewa- 
13 
5/22 
1 
3 
2 
— 
1 
— 
5 
7 
+40.0 
Big Blue- 
12 
5/27 
— 
— 
1 
1 
— 
— 
13 
2 
-84.6 
White, West Fork- - 
25 
5/26 
1 
— 
4 
1 
1 
— 
16 
7 
-56.3 
Muscatatuck- 
19 
6/4 
— 
— 
2 
2 
2 
— 
56 
6 
-89.3 
Salt Creek- 
15 
6/3 
— 
3 
6 
2 
— 
1 
26 
12 
-53.8 
Eel River- 
13 
6/2 
— 
— 
2 
3 
1 
1 
9 
7 
-22.2 
Total- 
143 
2 
12 
21 
11 
8 
3 
150 
57 
-62.0 
87 
