Comparative Data - July 1958 - Aerial Surveys - Southern Saskatchewan 
1957 1958 % Change 
Broods Per Square Mile 5.4 2.22 - 58.9 
Brood Index 615,839 253,135 3 - 58.9 
PLB Per Square Mile | 0.95 3.47 264.3 
Late Nesting Index 108, 562 395,500 264.3 
Pond Per Square Mile 10.99 6.71 - 39.0 
Pond Index 1,254,010 764,942 - 39.0 
Coot Brood Index 254,178 21,597 = 91.45 
Broods Per Square Mile 
AW 4.26 1.02 - 76.1 
AE 5.81 4.77 - 17.9 
BE 8.02 2.74 - 65.8 
BW 4.12 2.73 - 33.7 
Cc 2.27 0.61 -~ 73.1 
PLB Per Square Mile 
AW 0.87 2.10 / 141.4 
AE 2.33 8.01 / 243.8 
BE 0.89 3.55 f 298.9 
BW 0.50 3-71 # 642.0 
Cc 0.20 1.54 # 670.0 
Ponds Per Square Mile 
AW | 6.65 3.77 - 43,5 
AE 27.63 14.57 = 4T3 
BE 12.98 7.94 - 38.8 
BW 7.10 6.50 - 8.5 
C 3.13 2.99 - 4&5 
Coot Brood Per Square Mile: 
AW 1.24 0.04 - 96.8 
AE 0.59 0.27 ~ 5h.2 
BE 4.90 0.24 - 95.1 
BW 1.54 0.41 - 73.4 
g 0.25 0.02 - 92.0 
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