162 
Table IV - Nesting Success at Ogden’ Bay Refuge, 1952 
le a 


Total Not Successful Successful Average Number Eggs 
Species Nests Number Percent Number Percent Laid Hatched 
Mallard 62 38 61.2 24 38.8 8.3 5.4 
Cinn. teal 74 46 62.1 28 37.9 9.4 5.7 
Gadwall 81 57 70.4 24 29.6 10.3 6.4 
Pintail 52 33 63.4 19 36.6 7.8 4.4 
Canada geese 10 10 100.0 - - 5.4 4,5 
Shoveler 16 8 50.0 8 50.0 8.9 4.1 
Redhead 27 18 66,7 9 33.3 11.1 2.4 
a Nr le ee es 
Total 322 210 65.2 112 34.8 8.7 4.7 
Table V - Fate of Eggs in Nests Under Observation at Ogden Bay - 1952 
Number Number Left Destroyed 
Species Eggs Hatched Deserted In Nest Flooded Gulls Skunks Unknown 
Mallard 449 316 6 30 9 79 21 38 
Cinn. teal 664 401 40 39 32 91 4 57 
Gadwall 813 514 41 47 22 68 58 63 
Pintail 387 220 18 26 - 45 10 68 
Canada geese 54 45 - 9 - - - - 
Shoveler 143 66 16 ll 19 15 8 8 
Redhead 300 127 38 64 24 23 ll 13 
Total Zz, 860 1,689 159 226 106 321 ll2 247 
Percent 59.1 5.6 7.9 3.7 11.2 3.9 8.6 
Summary 
1. The Utah Fish and Game Department continued the aerial breeding 
ground survey of northern Utah which was started in 1950. This 
survey was supplemented by ground counts on State refuges, along 
aerial transect routes. 
2. Weather conditions during the spring of 1951 were not good, 
especially during March when there were blizzards and the marshes 
were frozen over. This delayed the nesting of geese and was severe 
enough to kill shore birds which had migrated into the area. Heavy 
floods scattered the birds over vast areas of flooded ground but did 
not flood nests as the birds were forced to high ground before the 
nesting season started. The late spring weather was ideal for the 
hatching and brooding of ducks. 
