GOT 
Table 2--Trend Data, Wood Duck Nesti 
Survey, 1953-1958 

Acres of lake and marsh censused 
Miles of stream censused 
Nesting effort per sq. mi. of lake 
and marsh 
Nesting effort per mile of stream 
Number of broods (stream) 
Broods per mile of stream 
Av. No. ducklings, Class I 
Av. No. ducklings, Class II 
Av. No. ducklings, Class III 
Av. No. ducklings, all classes 
Table 3--Trend Data 

Acres of lake and marsh 
Miles of stream censused 
Nesting effort per sq. mile of lake 
and marsh 
Nesting effort per mile of stream 
Mallard and Blue-winged Teal Nesti Surve 
| s953 | ag | 955 | 156 
4976 O31 7110 2222 
371 581 666 564 
5 8 4k 3.6 3.1 
24 222 013 10 
4e 31 28 23 
.09 eO4 03 Ok 
4.9 5.8 T3 6.3 
bk 72 6.2 5.8 
4.6 - - 7-0 
45 25 6.7 6 wi 
4976 4931 71210 2022 
371 581 666 564 
4 0 2 * 7 2 5 = 
eld ele 203 ed 
19ot 
9897 
774 
3.8 
13 
Missouri, 1953-1958 
| s53 | so | g55 | ag56 | ao57 | 1958 
3897 
TT 
6.5 
-O7 
1958 
6871 
613 
29 
ol 
37 
me) 
~I~J OO 
e o 
AVIW © 
6871 
613 
3.0 
? 
h 
204 
Per Cent 
Changs 
16 
- 20 
a 
nN 
Oo 
£05 
RRR, 
fh mw 
5 ad OS) 

Per Cent 
Change 
{16 
- 20 
- 33 
- he 
