
Breeding Population Indices - 
The aerial survey of 1955 covered the same routes and distance as 
the 1954 survey. The following table gives a comparative summary of the 
results of the 1954 and 1955 surveys: | 
Table 1 - Total Ducks Counted by Area and Square Mile as Determined from 
Aerial Surveys - 1954 and 1955 
Square Miles Total Ducks Ducks Per 
Sampled Counted Square Mile 
Route 1954 1955 1954 1955 1954 1955 
Box Elder County 48.0 48.0 2,752 3,958 57.3 82.5 
Weber County 15.5 15.5 1,100 1, 390 70.9 89.6 
Davis County 14.2 14.2 330 409 23.2 28.1 
Jordan River Clubs 6.2 6.2 809 584 130.5 94.2 
Salt Lake County 6.7 6.7 36 91 5.4 13.6 
Utah County 18.0 18.0 211 380 11.7 Z1-t2 
Total 108.6 108.6 5,238 6,812 48.2 62.7 
There was a 30 percent increase in the population of ducks along the 
aerial transect routes. All areas increased except the Jordan River Clubs. 
Counts of the species of ducks along the transect routes indicated a 
large increase in the redhead population of the area. There was also an 
increase in the numbers of mallard counted. There was a decline in the count 
of cinnamon teal. 
Production Information - 
An effort was made to make counts of goose broods over most of the 
State. Populations were known to be in several areas but could not be counted. 
There were also more broods known on some of the areas listed in the following 
table, but only birds actually seen were listed. 
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