Vol. 5, No. 10 
Page 3 
Table 2. Results of October rabbit trapping on the 4-H area from 1957-62. 
1957 
1958 
1959 
1960 
1961 
1962 
Rabbits Tagged (A) 
84 
104 
49 
48 
94 
43 
Total Captures (B) 
135 
145 
56 
58 
160 
65 
Capture Frequency (b/a) 
1.61 
1.39 
1.14 
1.21 
1.70 
1.51 
Estimated Spring Populations'”' 
47 
31 
132 
56 
162 
24 
Estimated October Populations'!' 
119 
201 
191 
133 
116 
72 
* Estimated from drive census. 
v Estimated from trapping results using 
Schnable's method. 
Table 3. Mean weights of 
cottontails trapped on the 4-H area during October 
from 1957-62. 
1957 
1958 
1959 
1960 
1961 
1962 
Animals Weighed 
83 
104 
49 
50* 
92 
40 
Mean V/eight (or) 
34.1 
35.6 
35.1 
32.6 
37.0 
32.5 
Standard Error 
10.8 
11.1 
13.1 
10.9 
9.6 
12.24 
* No trapping during the period 
October 
19-31, 1962. 
Sex ratios of rabbits trapped on th 
e 4-H area in October are given 
in Table 4. 
Whether the uneven sex ratios are caused by differences 
in trap 
response 
1 or by a 
real preponderance of females is not known. 
Table 4. Sex ratios of cottontails trapped 
on the 
4-H area 
during 
October 
from 1957-62. 
1957 
1953 
1959 
1960 
1961 
1962 
Animals Sexed 
85 
104 
49 
51 
96 
41 
Males 
40 
49 
15 
30 
46 
15 
Females 
45 
55 
34 
21 
50 
26 
MalesFemale Ratio 
47 s 53 
47 s 53 
31 :69 
59:41 
48:52 
37:63 
The fall trapping inventory of cottontails on the Sanctuary area of Allerton 
Park began October 23. Thirteen rabbits were marked and released during the first 
week of trapping. 
