208 
Table IV. - Brood Size as Determined by State-wide Observations Throughout 
the Season. 

Class [I Class II Class III 
No. of Average No. of Average No. of Average 
Species Broods Size Broods Size Broods Size 
Blue-winged teal 74 8.1 44 7.3 44 a A 
Mallard 52 6.7 37 6.9 25 6.4 
Pintail 39 6.2 32 6.0 52 6.5 
Gadwall 20 7.5 24 7.6 8 | 6.9 
Shoveler 14 7.1 8 6.6 11 6.6 
Baldpate 5 10.1 2 9.0 - - 
Redhead 5 6.2 3 4.7 5 7.4 
Ruddy 11 6.5 4 7.0 3 5.0 
Canvasback 14 8.1 15 6.4 8 5.4 
Unidentified 8 7.6 9 5.2 2 4.0 
Total 242 7.29 178 6.77 158 6.75 
Banding Operations 
Late appearance of duck broods prevented successful banding operations to 
be carried out before the last week of July. The work was continued throughout the 
month of August. 
The banding work was conducted by a single crew of four to eight men con- 
sisting of North Dakota Game and Fish Department employees and United States 
Game Management Agents. The drive-trap method was used exclusively and emphasis 
was placed upon the capture of locally reared birds. Approximate 80 percent of the 
1652 birds banded were in this category. 
The species composition, age and sex of 1627 of the ducks banded are shown 
in Table V. 
