178 
North Park - Eight sample areas in the important North Park region were covered 
in 1952 for the second consecutive year. Comparisons for the two years are given 
in Tables VIII and IX. 
On the basis of comparable counts on eight areas, the 1952 breeding-duck 
population was about 15 percent higher than in 1951 (Table V III). Final production 
figures correspond directly to this breeding-pair trend count, with an increase of’ 
13 percent in the number of broods, and 15 percent in young in 1952 (Table IX). 
The increase in production is attributed to a larger number of mallards, 
green-winged teals, canvasbacks, and lesser scaups successfully bringing-off . 
broods this year. Baldpates, shovelers, redheads, and ruddy ducks were down 
somewhat in production from 1951; and other species remained about the same 
during the two-year period. Considering both years, baldpates and mallards 
produced better than 50 percent of the total North Park broods. 
Table VIII - Observed Breeding Duck Populations on Eight Study Areas in North Park 
Species Pairs Lone Males re Males Females Totals 
1951 1952 1951 1952 1951 1952 1951 1952 1951 1952 
Mallard 13 12 2 21 54 124 l 1 83 170 
Gadwall 93 58 - 2 5 5 - - 191 123 
Baldpate 31 17 1 5 12 17 - - 75 56 
Pintail 4 7 - 1 12 1 - 2 20 28 
Green-winged teal - 6 1 4 - 2 - 1 1 13 
Blue -winged teal 1 4 - - - - - - 2 8 
Cinnamon teal 3 4 4 3 1 7 - - 11 18 
Shoveler 5 5 - - 12 2 3 l 25 15 
Redhead 19 12 - - 17 29 5 2 60 55 
Lesser scaup 22 3= 33 2 - 5 23 1 1 52 90 
Canvasback - 1 - 1 6 4 1 - 7 7 
Ring-necked duck - - - - - 1 - - - 1 
Ruddy duck 2 4 - - 6 28 4 10 14 42 

Total 193 163 10 37 130 253 15 18 541 626 
