TABLE B-46. --Species composition of breeding duck population, Moffat County, 
Colorado, 1964 and 1965 
Number 
Percent 
Species 
1965 
1964 1 
1954-1964 
average^ 
1965 
1964 1 
1954-1964 
averagel 
Ducks: 
Dabblers: 
Mallard- 
30,083 
31, 976 
27,233 
53.78 
57.74 
64.28 
Gadwall- 
5, 501 
3,450 
3, 394 
9.83 
6.23 
8.01 
American 
widgeon - 
1,200 
880 
500 
2.15 
1.59 
1.18 
Green-winged 
teal- 
3,890 
1, 656 
919 
6.95 
2.99 
2.17 
Blue-winged and 
cinnamon teal-- 
7,314 
5,377 
3, 627 
13.08 
9. 71 
8. 56 
Shoveler- 
2, 694 
2,359 
1,313 
5.30 
4.26 
3.10 
Pintail.— 
2,358 
5, 931 
2, 923 
4.22 
10. 71 
6.90 
Divers: 
Redhead- 
1,732 
2, 891 
1,445 
3.10 
5.22 
3.41 
Canavasback 
— 
2 
30 
T 
0.07 
Scaup - 
276 
399 
555 
0.49 
0. 72 
1.31 
Ring-necked duck 
27 
44 
76 
0.05 
0. 08 
0.18 
Buff lehead- 
14 
11 
4 
0.02 
0.02 
0.01 
Ruddy duck- 
27 
78 
102 
0.05 
0.14 
0.24 
Miscellaneous: 
Merganser- 
547 
327 
245 
0.98 
0.59 
0. 58 
Totals- 
55,933 
55,381 
42, 366 
100.00 
100. 00 
100.00 
1 
Revised San Luis Valley estimates are included in these figures. 
74 
