Reintroduction scenarios for San Francisco gartersnakes (<i>Thamnophis sirtalis tetrataenia</i>) that vary in the age of individuals released to initiate the new population and the number of individuals released during each event.

Each strategy was repeated with releases occurring annually for 1, 5, 10, 15, or 20 years. Adults req. = The number of adults required to be kept in captivity to produce the necessary propagules of neonates and juveniles to release (strategies A, B, and D) or to translocate adults directly from the donor population (strategy C).