The peak were occurred
in April
(80% of collected female snakes)
and followed
by August (38% of collected female snakes).
Gravid female snakes containing
the full-term
stage of an embryo,
stage 37, were found
from May (5% of collected snakes) to June
(16% of
collected snakes)
and September (11% of collected snakes).
Each reproductive condition of
female snakes
was shown in figure 6.