163 
Table III, - Average Brood Size by Age Classification in Western Oregon 
vs ial: (4. 5 Square Miles at Sauvie [sland). 
Class I Class II ‘Class III 
Females No. No. Ave. No. No. Ave. No. No. Ave. 
Species w/broods Broods Young Size Broods Young Size Broods Young Size 
a a a a a 
Mallard 51 21 154 7.3 30 234 7.8 
Wood duck 17 2 16 8.0 4 26 «66.5 11 41 3.7 
Cinn. teal , 2 2 15 7.5 
LY 
Total 70 2 16 8.0 25 180 7.2 43 290 6.7 
Nesting Studies 
Wood duck nesting studies were continued on Sauvie and Government Islands 
where 350 nest boxes were inspected. Total usage by all wildlife species amounted 
to 342 or 97 percent. Wood ducks used 261 of the nests or 74.6 percent. 
Banding 
During the period of June 1 through September 30 a total of 2402 ducks, 222 
geese and 4] coots was banded. Some wood ducks banded in nest boxes prior to 
June 15 are also included. 
Table IV, - Waterfowl Banded in Oregon - June 1 through September 30, 1954. 
Adult Immature Adult Immature 
Species Male Male Female Female Total 
Mallard 388 440 189 267 1284 
Pintail 300 167 133 90 690 
Baldpate i ] 2 
G-w. teal 7 2 2 2 13 
Gadwall ll 15 26 
Shoveler l 1 
Cinn. teal 80 6 82 168 
Wood duck 1 194 195 
Redhead A 11 12 23 

Total 695 713 524 470 2402 
