Jolly- compute survival rate, population size, and immigration rate estimates from capture-recapture data

This program is used to compute survival rate, population size, and immigration rate estimates from capture-recapture data. The program computes these statistics using the model suggested by Jolly (1965; Biometrika 52:225- 246) which allows both death and immigration . A goodness-of-fit test is also provided to determine if this model is appropriate. A second model (Model A' ) is available which allows for death but no immigration. The same statistics (except for the estimate of immigration), including a goodness-of-fit test, are computed in this model. Another model (Model 2) included in this program assumes survival rates are different for animals which are captured for the first time than unmarked or previously marked animals. The program also computes estimates under two reduced parameter models (Model B: constant survival rate, time-specific capture probability and Model D: constant survival rate and constant capture probability). A more modern Windows95 program, MARK (written by G. White) is recommended instead of JOLLY. Mark is available at http://www.cnr.colostate.edu/~gwhite/mark/mark.htm.