Patton,
Because captive conditions speed up the entire reproductive process, captive bred female Rubber Boas will generally produce litters from late July to near the end of August. Females that are gravid when captured usually produce their litters later than captive bred females. The peak period for parturition (birth) is in the second week of Sept. for females in the wild and gravid female captured well after gestation had commenced.

I believe the latest birth I have recorded for such a female was in early October. The last litters produced this year were Sept. 14, 16, and 18 for three gravid females I captured on June 28th. My captive bred females produced their litters in August.

Richard F. Hoyer

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