

CENTRAL FLYWAY 
Table Il summarizes the species composition of the breeding population 
for 1955 and 1956. Mallards have remained number one in abundance and com- 
prise nearly the same percentage of the breeding. population in 1956 as in 1955. 
Table III presents a comparison of the inventories of various goose 
breeding populations throughout the State. The goose breeding population in 
Wyoming has been on the decline for the past three years and this year's inven- 
tory reveals no change in this trend. 
Table I - Summary of Duck Breeding Ground Survey - Wyoming - 1955-1956 

SAMPLE 
| . Breeding Pairs Total 
Species 1955 1956 1955 1956 © 
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Mallard 584 550 1,281 1,667 
Pintail fe 106 104 231 ~ 310 
Teal 70 146 224 | 333 
Shoveler 74 56 183 174 
Gadwall _ 34 72 105 162 
Baldpate . 36 39 92 -100 
Redhead | } : 23 . 8 46 16 
Coot 9 13 88 106 
Barrow's Goldeneye 4 | 1 8 7 6 
American Merganser 13 10 26 42 
Ruddy Duck 6 0 27 | . 46 - 
Scaup 4 12 8 30 
Unknown 136 52 276 1,013 
i 
Total — : | 1,099 1,063 | 2,595 4,005 
Wyoming Area - 97,914 square miles 1955 1956 
Total Area Sampled 54,249 . 54, 249 
Total Breeding Ground in Sample 2,239 2, 367 
Average Pairs Per Square Mile 49 45 
Average Ducks Per Square Mile 1.16 1.69 
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53 
