Table II. - Average Brood Sizes by Age Classes 


Species Class I Class II Class III 
Total 
Broods Broods Av.Size Broods Av.Size Broods Av. Size 
_ Black duck 65 | 25 7.0 25 6.3 15 5.9 
Ring -necked duck 64 32 7.6 22 6.3 10 5.9 
American golden-eye 17 4 6.0 4 4.2 5 3.7 
Wood duck 9 2 9.5 3 z.7 4 7.8 
Hooded merganser 2 -- -- -- -- 2 4.5 
American merganser 2 -- -- -- -- 2 6.0 
Blue-winged teal 1 -- -- 1 7.0 = may 
Totals 160 63 743 55 6.0 42 5 
285 
