Ld 
Table 8 « Aerial Production Data = 1956 = 1957 



Strata A Strata B. _ Strata C : Province 
1956 1957 1956 1957 1956 1957. 1956 1957... 
eee SSS SS 
Area Square Miles 22088 22088 26100 26100 16112 16112 64300 64300 
Sample Square Miles 263.25 263.25 189,0 189.0 85.5 85.5 537.75 537.75 
Total Broods Seen 1194 1353 978 1471 78 lll 2250 2935 
Brood Per Square 
Mile 4.53 5.14 io ee 7.78 0.91 1.29 4.18 5.46 
Eistimated Number 
of Broods 100059 113532 134937 203058 14662 20784 249659 337374 
Potential Later . 
Broods 148 126 111 66 22 24 281 216 
Potential Broods Per 
Square Mile 0.56 0.48 °+2«°\:0.59 0,35 0.25 0.26 0.52 0,40 
Number Potential , 
Later Broods 12369 10602 15399 9135 4029 4189 31796 23926 
Total Index. ....: 
Broods 112428 124134 150336 212193 18690 24973 281454 361300 
Broods Per Square 
Mile Index 5.09 5.62 5.76 8.13 1.17 1.55 4,38 5.61 
Average Brood Size 6.11 6.21 6,04 6,34 5.20 5.70 6.04 6.25 
Estimated Number 
of Young 686935 770872 908029 1345304 107188 132346 1702152 2261125 
AVMATH OIADVd 

