Table IV. - Indicated Minimum Total Production Occurring within a Transect 
1/4 Mile Wide and 58-Miles Long Located in the Coteau Region 
of North Dakota 
: 
Species No. of Broods Average Brood Size * Basis 
B-w. teal 64 7.6 60 
Gadwall 25 6.7 24 
Pintail 21 5.2 20 
Mallard (15 6.7 14 
Shoveler 9 5.9 9 
Baldpate 2 9.0 2 
G-w. teal 1 10.0 1 
Redhead 8 7.1 7 
Canvasback 1 6.0 l 
Scaup 1 11.0 1 
Ruddy duck 10 6.6 7 
Unidentified 16 By 2 13 
Total 173 159 
Average 7.3 


* Represents broods of all ages. 
