TABLE B-17. - -Duck numbers, aerial surveys, Utah, 1964 and 1965 
Route flown 
Box Elder 
County 
Weber 
County 
Davis 
County 
Jordan 
River 
Salt 
Lake 
County 
Utah 
County 
Total 
Area sampled 
(sq. mi.)- 
48.0 
15.5 
14.2 
6.2 
6.7 
18.0 
108.6 
Ducks: 
Number counted: 
1964. 
2, 595 
1, 050 
1, 056 
564 
33 
280 
5, 578 
1965. 
2, 468 
1,154 
986 
650 
27 
616 
5,901 
Number per square 
mile: 
1964. 
54.1 
67.7 
74.4 
91.0 
4.9 
15.6 
51.4 
1965. 
51.4 
74.3 
69.4 
104.7 
4.1 
34.2 
54.3 
Percent change 
from 1964- 
-5 
+ 10 
-7 
+15 
-18 
+116 
+5 
TABLE B-18. --Species composition of breeding populations of waterfowl 
Utah, 1964 and 1965 
Species 
Northern area 
Southern area 
1964 
1965 
1964 
1965 
Ducks: 
Dabblers: 
Mallard- 
16.0 
14.4 
18.3 
16.2 
Gadwall- 
11.6 
13.4 
13.7 
12.1 
Widgeon-- 
0.1 
1.1 
2.1 
1.9 
Green-winged teal- 
0.6 
0.9 
11.5 
7.4 
Blue-winged teal and cinnamon teal- 
17.1 
18.9 
12.5 
17.5 
Shoveler--- 
10.9 
7.7 
6.5 
8.1 
Pintail. 
8.0 
11.8 
15.6 
16.2 
Divers: 
Redhead—- 
29.4 
24.7 
14.1 
11.0 
Scaup- 
0.2 
0.7 
1.2 
2.1 
Ruddy duck- 
6.1 
6.4 
4.4 
7.5 
54 
