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Table III. - Estimate of Total Waterfowl Production on Four "Check" Breeding 
Areas in Colorado, 1955. * 

Broods Young 
Breeding Area 1952 1953 1954 1955 1952 1953 1954 1955 
San Louis Valley - - 2293 3750 - - 12611 20625 
Yampa Valley 1360 1030 1030 730 8670 6690 6880 4161 
Cache la Poudre Valley 781 800 877 514 4851 4821 4867 2698 
North Park - 3736 1625 1800 - 22864 10075 11520 
Ce er 
Total 5825 6794 34433 39004 
| Pp RN TT FS FC DS EES 
* Estimated total production based on sample areas within each 
breeding ground. 
