THT 
Table 2. Trend Data - Wood Duck Nesting Survey - 1953-1959 - Missouri 
| - | Percent 
1953 1954 1955 1956 1957 1958 1959 _—s Change 
Acres of lake and marsh censused 4,976 4,931 7,110 2,222 5,897 6,871 7,884 f 15.0 
583 - 

Miles of stream cehsused 371 561 666 564 Th 613 5.0 
Nesting effort per sq. mi. of 
Lake and marsh 5.8 Tee 3.6 3.1 3.8 5.9 5.0 - 15.0 
Nesting effort per mile of stream ok 222 13 10 13 215 22 6 f 47.0 
Number of broods (stream) | he 31 28 223 37 37 78 £111.0 
Broods per mile of stream 209 .O4 .03 me) Ob 06 13 £ 117.0 
Average number of ducklings, Class I 4.9 5.8 7-3 6.3 7.0 9.0: 7.0 - 22.0 
"i e e ? Class II 4.4 7.2 6.2 5.8 6.0 6.3 5.0 ~ 21.0 
ep a : e Class III 4.6 - - 7.0 6.1 7.5 4.0 - 47.0 
" " " All Classes 4,5 6.5 6.7 6.4 6.1 7.6 5.6 - 26.0 
Table 3. Trend Data - Mallard and Blue-winged Teal Nesting Survey - 1953-1959 
Percent 

SO oe Se | 19531954 1955 1956 19571958 1959 Change 
Acres of lake and marsh 4,976 4,931 7,110 2,222 5,897 6,871 7,88h # 15.0 
Miles of stream censused 371 581 666 564 774 613 583 ~ 5.0 
Nesting effort per sq. mi. of ie 
lake and marsh ho 2.7 2.5 ~ 6.5 3.0 2.5 ~ 17.0 
Nesting effort per mile of stream .19 12 03 - -07 Oh 05 f 25.0 

