Vol. 20 , No. 9 
Page 6 
1966 
5 
100.0 
1967 
10 
50.0 
1968 
18 
72.2 
1969 
28 
64.3 
1970 
63 
66 . 1 
1971 
62 
66 . 7 
1972 
86 
64.9 
1973 
84 
31.1 
• 974 
65 
41.7 
1975 
59 
42. 1 
• 976 
46 
35-6 
• 977 
24 
59.1 
Total or 
Mean 
542 
53.5 
- Nests 
of unknown 
fate am 
2 
14 
21 
58 
33 
4o 
33 
16 
9 
20 
28 
18 
100.0 
75-0 
57-9 
43.2 
46.4 
42.9 
80 . 0 
35.7 
22.2 
35-7 
32. 1 
77.8 
50.2 
0 
0 
0 
I 
7 
10 
4 
9 
4 
6 
5 
4 
? 
50.0 
55.6 
100.0 
44.4 
25.0 
66.7 
40.0 
0.0 
success. 
