TABLE ITI -- Summer Brood Survey in the Northeastern States, 1958 
(110 Comparable Areas, Table I) 



Total Broods Young Produced Average Brood Percent of Change 
1958 1957 1958 1957 1958 1957 Young Produced Broods 
In- De- In- De- 
Species crease crease crease crease 
Black duck 232 318 1,534.6 2,062.7 6.6 6.5 = 4 25.6 ae 27.0 
Ks Wood duck 193 22h 1,412.0 1,514.5 7.3 6.8 Ls. 6.8 a 13.8 
ud 
Mallard 76 107 4o6.4 598.7 6.5 5-6 ae: nk =e 29.0 
Ring-necked 
duck 2k 27 177-6 164.0 7b 6.1 8.3 eT 422 
Blue -winged 
teal 23 35. 201.1 290.3 8.7 8.3 ae 30.7 aly, 34.3 
AVMXId OLLNVILV 
