TABLE B-62. - -Wood duck nesting effort and production data, Missouri, 
1963 and 1964 
1963 
1964 
Percent 
change 
from 
1963 
Lake and marsh censused (acres)- 
10,938 
10,955 
Streams censused (miles) - 
743 
730 
Wood duck: 
Nesting effort: 
Per sq. mile of lake and marsh- 
12.7 
6.0 
-52.8 
Per mile of stream- 
.33 
.32 
-3.0 
Number of broods (stream)- 
122 
105 
-13.9 
Broods per mile (stream)- 
.16 
.14 
-12.5 
Number of broods (marsh)- 
42 
25 
-40.4 
Broods per sq. mi. (marsh)- 
2.5 
1.5 
-40.0 
Average number of ducklings 
Class I- 
6.6 
6.5 
-1.5 
Class II- 
7.1 
5.5 
-22.5 
Class HI - 
5.1 
4.2 
-17.6 
TABLE B-63. - -Number of water bodies, southwest Manitoba, May 1963 and 1964 
Area 
1963 
1964 
Streams- 
Dugouts- 
Field (sheet) water- 
Other- 
45 
56 
221 
1,382 
45 
52 
344 
1,657 
Total 
1,694 
2,088 
Percent change 
1963-1964 
0 
+13 
+56 
+11 
+23 
Water areas/sq. mi.- 
21.7 
26. £ 
88 
