Table VI. - Average Brood Sizes by Age Ciasses on the Success Study Area, 1955. 
RRR Agee Sh eh seat = Dalene cme se A ead ~ foci sil arf RV SR Pt aa ah se? at ais ema toed 
Average Brood Size * 

Species Ia Ib Ic Ila IIb IIc III IIc and III All Age Classes No. of Broods . 
Pintail 6.69 6.25 6.28 5.27 5.55 5.00 5.09 5.05 6.11 116 
Mallard 7.55 6.92 7.28 5.40 8.31 6.50 6.50 6.50 - 6.96 95 
B-w. Teal 10.25 8.00 8.17 8.50 7.69 7.69 - 7.69 . 8.10 52 
Shoveler 9.33 9.00 7.00 6.71 9.14 8.33 6.00 7.56 8.13 40 
Gadwall 9.50 7.00 7.75 8.00 9.00 5.00 - 5.00 8.31 16 
Baldpate 6.00 7.00 6.00 $7.00 7.00 - - - 6.78 9 
Canvasback 7.50 7.00 8.00 - - 5.00 - 5.00 7.14 7 
L. Scaup 8.00 4.00 - 4.00 - - - - 6.40 5 
Redhead - 6.00 - - 5.00 - - - 5.50 2 
Ruddy duck 9.00 - - - - - - - 9.00 2 
G-w. Teal - - - - - 11,00 - - 11,00 11.00 1 
Total 7.41 7.09 7.25 6.33 7.39 6.88 5.73 6.48 7.05 345 

* Only complete broods included. 
Table [X. - Summary of Ducks Banded On and Near the Success Study Area, 1955. | 
Local Immature Adult 
Un- TT Total = Total Un- Grand 
Species Male Female sexed Tot. Male Female Tot. Male Female Tot. Male Female sexed Total 
Pintail 15 25 1 41 77 139 216 7 7 14 99 171 1 271 
B-w. Teal 63 51 - 114 - 1 1 15 2 17 78 54 - 132 
Mallard 11 9 - 20 23 9 32 26 4 30 60 22 - 82 
Shoveler 5 8 - 13 - - - - - - 5 8 - 13 
Baldpate 3 5 - 8 - - - - - - 3 5 - 8 
G-w. Teal 1 2 - 3 - = - l - 1: 2 2 - 4 
Gadwall 1 l - 2 - - - - - - 1 1 - 2 
L. Scaup. - - - - - - - - 1 - - 1 - 1 
Be ey ps in I rai ee ee ae ae en ee ee = 
Total 99 101 1 201 100 149 249 49 14 63 248 264 l 513 
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