and young birds were observed on both the aerial and ground surveys 
carried out in June and July (Table 2). Table 3 shows a decrease 
in average brood size for all three age classes. 
(v0) Ring-necked Duck 
Counts of ring-necked duck in May of this year were down 
32 percent from 1954 (Table 1). A 50 percent decrease also occurred 
in the number of adult and young birds observed on summer brood 
surveys (Table 2). Average brood sizes were also smaller in 1959. 
(c) Goldeneye 
Although there was only a slight increase in the number 
of goldeneye observed on the breeding-pair survey in May, the number 
of broods and young birds observed on the summer brood surveys 
increased approximately 50 percent from 1954 (Table 2). 
The average size ot class II broods observed was 5.4 as 
compared to 3.1 in 1958 (Table 3). 
(d) Biue-winged Teal 
A large increase from 1959 occurred in the number of 
adult birds observed on both the breeding-pair and summer brood 
surveys. The increase in the number of broods observed (Table 2) 
indicates that many nests survived tne ticed conditions tnat pre- 
valled in mid-June. 
Conclusions 
Available data suggest slight decrease in Black Duck and a 
large decrease in Ring-necked Duck production in 1959. Production 
of Goldeneye and Blve-winged teal will probably be greater than 1958 
production. 7 | 
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