TABLE B-38. --Waterfowl production index and water areas, 
North Dakota, 1965 
Transects 
Square 
miles 
Total 
duck broods 
Water 
areas 
Test Run - 
7.5 
4 
52 
Antelope Lakes- 
8.3 
4 
23 
Drake-Anamoose- 
8.8 
3 
56 
Hurdsfield-Chaseley -- 
8.0 
3 
82 
Cleveland-Woodworth - 
7.0 
6 
65 
Medine-Gackle- 
7.0 
14 
96 
Douglas - 
8.2 
5 
74 
Snake Creek- 
7.0 
5 
63 
Leeds Circuit- 
7.5 
4 
39 
Leeds-Maza- 
7.8 
, 1 
35 
Rugby North- 
7.5 
5 
13 
Rugby South ——-- 
7.5 
— 
10 
Totals- 
92.1 
54 
608 
Brood index- 
0.59 
Water index- 
6.60 
TABLE B-39. —Duck broods, species composition, mid-July, 
North Dakota, 1955 to 1965 
Species 
Average 
Percent of total 
1955-1964 
1964 
1965 
Mallard-- 
16.7 
10.0 
11.1 
Gadwall--- 
14.8 
20.0 
9.3 
Widgeon *-—-- 
1.6 
2.5 
5.6 
Green-Twinged teal- 
0.1 
0.0 
0.0 
Blue-winged teal- 
34.6 
25.0 
33.3 
Shoveler-- 
6.4 
2.5 
0.0 
Pintail -— 
15.3 
17.5 
14.8 
Redhead -- 
2.4 
2.5 
1.8 
Canvasback —- 
6.4 
15.0 
22.2 
Scaup —-— 
0.2 
o.o 
0.0 
Ruddy duck -—■— 
1.5 
5.0 
1.8 
69 
