Table 24.--Sex ratios of trapped samples of mallard 
locals by reference area 1/ 
Reference Area 
Males 
Females 
Percent Males 
Northern Pacific 
Alaska 
161 
148 
52.1 
British Columbia 
133 
134 
49.8 
Western United States 
Washington 
630 
565 
52.7 
Oregon 
139 
129 
51.9 
California 
633 
513 
55.2 
Idaho 
75 
97 
43.6 
Nevada 
37 
26 
58.7 
Utah 
104 
124 
45.6 
Western Interior Canada 
Northwest Territory 
53 
55 
49.1 
So W. Alberta 
2305 
2173 
51.5 
S. E. Alberta 
3401 
2995 
53.2 
S. W. Saskatchewan 
10343 
10004 
50.8 
Northern Plains 
S. E. Saskatchewan 
8694 
8462 
50.7 
S. W. Manitoba 
1192 
1156 
50.8 
W. Montana 
33 
29 
53.2 
E. Montana 
243 
249 
49.4 
North Dakota 
595 
575 
50.8 
South Dakota 
1283 
1250 
50.6 
West-central United States 
Wyoming 
29 
28 
50. 9 
Colorado 
516 
504 
50.6 
Nebraska 
332 
309 
51.8 
New Mexico 
32 
24 
57.1 
Eastern Prairie and Great Lakes 
S. E. Manitoba 
59 
67 
46.8 
Minnesota 
1458 
1092 
57.2 
Wisconsin 
41 
33 
55.4 
Michigan 
72 
67 
51.7 
97 
