
225 
Table II. - Trend Data - Wood Duck Nesting Survey - Missouri, 1953-1955. 
1953 
Acres of lake and marsh censused 4, 976 
Miles of stream censused 371 
Nesting effort per square mile 
lake and marsh 5.8 
Nesting effort per mile of stream . 24 
Number of broods 42 
Broods per mile of stream 0 
Avg. no. of ducklings, Class I 4.9 
Avg. no, of ducklings, Class II — 4.4 
Avg. no. of ducklings, Class III 4.6 
Avg. no. of ducklings, All Classes 4.5 
1954 
4,931 
581 
oa 1 sun 
hw 
Table Ill. - Trend Data - Mallard and Blue-winged Teal Nesting Survey - 

Missouri, 1953-55 
1953 
Acres of lake and marsh 4,976 
Mile of stream censused 371 
' Nesting effort per square mile - 
lake and marsh 4.9 
Nesting effort per mile of stream .19 
1954 
4,931 
581 
Percent 
1955 Change 
7,110 + 44 
666 + 15 
3.6 - 18 
13 -~ 41 
28 - 190 
.03 - 25 
7.3 - 
6.2 - 
6.7 
Percent 
1955 Change 
7,110 + 44 
666 + 15 
rN - 7 
03 - 75 
