247


 10000-

 MOVING 5 YEAR AVERAGE
 NESTING SUCCESS
 AT CORKSCREW SANCTUARY
8000- 1957-1974
z
5 7000-
w3
IJ
L.. 6000-
LL.
0 5000-

IJ
, 4000-

 3000-

 2000-

 960 001965 1970
 1960 1965 1970