CENTRAL FLYWAY 
Continued Total Sq. Mi. of Total 
Waterfowl No.Sq.Mi. Estimated Breeding Pairs 
Area Habitat in Sample 1952 1953 1954 1955 
Geese 
Yampa Valley 200 22.0 120 130 86110 20 
Browns Park 15 15.0 21 12 8 15 
Total 141 142 118 35 
* Total square miles of habitat not known for this area. 
Table 2 - Species Composition of Colorado Breeding Population, 1955 * 

Number Species Composition % 
Species 1954 1955 1954 1955 
Mallard 11,295 9, 633 70.4 63.9 
B-w. Teal 886 600 5.5 4.0 
Pintail 873 750 bers 5.0 
Gadwall 852 1, 874 bao 12.4 
Baldpate 552 211 3.4 1.4 
Shoveler 542 220 3.4 1.5 
Cinnamon Teal 442 509 2.8 3.4 
G-w. Teal 220 407 1.4 ae | 
Amer. Merganser 114 105 0.7 0.7 
Redhead 109 352 0.7 2.3 
Scaup 99 369 0.6 2.4 
Ruddy Duck 48 44 0.3 0.3 
Total 16,012 15,074 100.0 100.0 
* Data derived from permanent transects in all Colorado 
breeding areas listed in Table 1 with the exception 
of the White River Plateau. Data are corrected for 
unidentified pairs. 
Conclusions - 
On the basis of a breeding population similar in size to that of 1954 
and the somewhat improved water conditions during the brood period it is 
estimated that the fall flight from Coloradc will be about the same as in 1954. 
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