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5. Final 1952 North Park duck production was about 15 percent higher 
than in 1951. 
6. San Luis Valley production in 1952 was much greater than in 1950, 
Gross comparison between 1951 and 1952 revealed that unrestricted breeding 
areas in 1952 allowed a greater production than did the restricted nesting habitat 
in 1951, 
7. First-year studies in the Yampa Valley indicate that this is an 
important waterfowl breeding ground in Colorado. Mallards, teals, and Canada 
geese were the most common nesting species. Projection of sample area results 
revealed that about 9,000 ducks and geese were raised in the Valley this year. 
8. First-year studies in Brown's Park revealed that an appreciable 
number of ducks and Canada geese nest along this portion of the Green River. The 
most important duck species were mallards, gadwalls, teals, redheads, and pintails. 
Indicated total Brown's Park production in 1952 was 1,451 ducks and geese. 
9. Waterfowl production studies on high-country lakes and beaver dams 
show that production per square mile in the higher elevations is somewhat less 
than lower valley types. Mallards and green-winged teals were the only nesting 
species observed. On the basis of a 5 percent sample, the White River Plateau 
produced nearly 2, 500 ducks this year. 
10. ‘The over-all outlook of the 1952 waterfowl crop in Colorado -- a season 
characterized by an abundance of water and damaging floods along streams -- 
compared favorably with that of 1951. A very small decrease in production on the 
East Slope was more than balanced by a striking increase in the San Luis Valley 
and North Park. No comparable data are available for other regions. Drought 
and hail accounted for minor losses in northeast Colorado. 
