174 
Table I. - Summary of Duck Breeding Ground Survey in Wyoming, May, 1955, 


Sample Estimated Population 
Species Pairs Total Pairs Total 
Mallard 584 1,281 29,558 64, 834 
Pintail 106 231 5,365 11,691 
Teal 70 224 3,543 11,337 
Shoveler 74 183 3, 745 9,262 
Gadwall 34 105 1, 721 5,314 
Baldpate 36 92 1,822 4,656 
Redhead 23 46 1, 164 2,328 
Coot 9 88 456 4,454 
B. Goldeneye 4 8 202 405 
Am. Merganser 13 26 658 1, 316 
Ruddy Duck ° 6 27 304 1,367 
Scaup 4 8 202 405 
Unknown 136 276 6, 883 13,969 
Total 1,099 2,595 55,623 131,339 
Wyoming Area 97,914 Square Miles 
Total Area Sampled 54,249 Square Miles 
The Total Breeding Ground in Sample 2,239 Square Miles 
Average Pairs Per Square Mile 49 
Average Ducks Per Square Mile 1.16 
Computation of Correction Factors: 
Aerial Count of Ground Check Areas (22.7 Square Miles) 
Pairs 27 
Single Males 34 
Single Females 2 
Groups 9 
Total 135 
Ground Count of Ground Check Areas 
Pairs 77 
Single Males 58 
Single Females 1 
Groups 10 
Total 282 
Correction Factor 282 - 2.9889 Blow-up Factor 54,249 x 2.0889 = 
135 2,239 50.6122 

