Table 30. Estimated average number female fledglings per breeding female at Corkscrew Swamp Sanctuary,
based on nesting history in Table 2.


Total Pair
 nesting
 zN

 18500

 27700

 46200


Estimated
number

nesting
(EN) 9/a1

 4111

 6156

 10267


 Total
fledglings
Produced
 EF

 44425

 28390

 72815


 Total
fledglings
Produced
 (EF)/2

 22213

 14195

 36408


fledglings
 per mature

((zF)/2)/((EN)/a)

 5.403

 2.306

 3.546


fledglings
 per q
 per year

 0.6754

 0.2096

 0.1866


la = 9.0 4.5 = 4.5


Period

1957-64

1965-75

1957-75


Number
years
n

8

11

19


--


----