ACTIVITY 
ACTIVITY 
PERCENT 5 -° 
OF 
TOTAL 2.5 
ONE DAY 
n 
( -T L ] r 
APRIL 4-5 
1948 
y^ 
NOON 6 P.M. MIDNIGHT 6 A.M. NOON 
ONE DAY 
I n 
MAY 8-9 
1948 
y y-L 
jiA 
r 
J Lr |_ 
Figure 85. — Activity period 5,- March-April 1948; 24 Figure 86. — Activity period 6; May 1948; 23 adults and 
adults and 21 young that were being weaned contributed 63 juveniles in the 30- to 60-day age range contributed 
to this record. to this record. 
ACTIVITY 
ACTIVITY 
6 P.M. 
SUNSET 
6 A.M. 
SUNRISE 
OF 
TOTAL 
PERCENT 50 
OF 
ONE DAY 
FEB. 14-15 
1949 
Jih 
D=0: 
u 
i « 
PERCENT 50 
OF 
0 L 
NOON 
6 P.M. 
SUNSET 
6 A.M. 
SUNRISE 
OF 
TOTAL 
ON 6 
’M. 
1 
MIDNI6H1 
□ 
6 
\.M. NOON 
ONE DAY 
FEB. 13-14 
1949 
r- 1 
r 
u[ 
IVv 
y 
/ 
~L 
PERIOD 7 
Figure 87. — Activity period 7/ June 1948; 22 adults and 64 
juveniles in the 30- to 90-day age range contributed to 
this record. 
Figure 88. — Activity period 8; February 1949; 135 adult 
rats present in the pen; this time just precedes the initiation 
of the breeding season. 
115 
