Taole V - Duck Brood Census in Oregon - West of Cascades 
Period 
June ist half 
June 2nd half 
August lst half 
June 
Census Area 
Sq. Miles 
5.8 
25.1 
6.7 
14,6 
Species 
Mallard 
Wood duck 
Total 
Mallard 
Wood duck 
Total 
Mallard 
Wood duck 
Total 
Mallard 
Pintail 
Cinn,. teal 
Gadwall 
Redhead 
B-w. teal 
Ruddy 
Shoveler 
Wood duck 
Total 
Females Percent 
Sel 
Average Brood Size 


Counted Females Broods Young 
W/Brood Class I Class II Class III / Sq. Mile / Sq. Mi. 
127 3.0 11.5 8 - 0.7 6.7 
80 3.7 14.0 6 - 0.5 4.5 
207 3.4 1.2 10.7 
50 44 5.1 6.6 6.0 0.9 5.6 
33 45 10.0 7.7 5.6 0.6 5.0 
88 44 L.3 10.6 
20 65 E 5.5 4.5 1.9 9.1 
24 67 - 3.3 5.2 2.4 11.2 
48 66 4.3 20.3 
East of Cascades 
78 19 7.7 7.0 - 1.90 7.8 
5 40 > 6.5 - 0.1 0.9 
15 13 6.0 10.0 - 0..1 l,l 
ll 18 9.0 - 10.0 0.1 1.4 
19 21 6.7 9.0 - 0.3 2.0 
1 0 - - - - - 
14 50 5.4 6.5 - 0.5 2.8 
2 50 4.0 - - 0.7 2.7 
3 0 - - - - = 
Al. US Fo VE, ee 3 et I ee 
148 22 - - - 2.3 17.2 
(continued) 
