

184 
Table IIl. - Comparison of 1955 Aerial Survey of Breeding Waterfowl With 
That of 1953 and 1954. 
Transect Square Miles Total Ducks Observed Ducks Per Square Mile 
Number in Sample 1953 1954 1955 1953 1954 1955 
1 78.0 1474 1280 1963 18.9 16.4 25.2 
2 80.0 1162 1143 2320 14.5 14,3 29.0 
3 79.5 1659 1155 2196 20.9 14.5 27.6 
4 79.5 1929 1092 1995 24. 3 13,7 25.1 
5 80.0 1728 580 1050 21.6 7.3 13.1 
6 80.7 2072 487 811 25.7 6.0 10.5 
7 83.0 1905 718 1120 22.9 8.7 13.5 
8 83.0 1189 656 759 14, 3 7.9 | 
9 84.0 1737 912 925 20.7 10.9 11,1 
10 85.0 1703 860 949 20.0 10.1 11.2 
11 85.0 1432 831 960 16.8 9.8 11.3 
12 85.0 972 707 599 11.4 8.3 7.0 
13 86. 0 1157 811 697 13,5 9.4 8.1 
14 86.0 790 809 725 9.2 9.4 8.4 
15 87.7 1416 633 959 16.4 7.2 10.9 
16 89.0 1136 396 504 12.8 4,4 54 
17 90.0 11il 826 575 12.3 9.2 6.4 
18 89.0 963 1010 599 10.8 11.3 6.7 
Total 1510.4 25535 14906 19706 
Average 710031 
Waterfowl Production 
Seven waterfowl breeding population and production ‘routes totalling 
244 lineal miles were run every seven to ten days beginning in May and ending 
in September. The purpose of these runs was to determine the breeding pair 
population and the success of pairs in bringing off broods. Brood production 
was determined by aging broods on each run and eliminatingon the following weeks 
those that appeared to be repeat observations from previous weeks. 
Table IV shows the breeding pairs, broods observed and success of 
breeding pair on the seven transects. Success of breeding pairs in the southern 
half of the State (Wing-Tuttle, Medina-Gackle, and Cleveland-Woodworth routes) 
appeared to be higher than in the northern one-half of the State. The reason for 
this is not known although concentration of broods on fewer potholes due to the 
dry conditions and less emergent brood cover may have had some influence. The 
over-all success on all routes was 51.2 percent. 
