A Program to Estimate Animal Abundance and Density using Bayesian Spatially-Explicit Capture-Recapture Models CRAN Task View: Environmetrics (http://CRAN.R-project.org/view=Environmetrics) SPACECAP is a user-friendly software package for estimating animal densities using closed model capture-recapture sampling based on photographic captures using Bayesian spatially-explicit capture-recapture models. This approach offers advantage such as: substantially dealing with problems posed by individual heterogeneity in capture probabilities in conventional capture-recapture analyses. It also offers non-asymptotic inferences which are more appropriate for small samples of capture data typical of photo-capture studies. Software Depends: R (>= 2.9.2), tcltk, TeachingDemos Jim Hines <jhines@usgs.gov> Arjun M. Gopalaswamy, Andrew J. Royle, Jim Hines, Pallavi Singh, Devcharan Jathanna, N. Samba Kumar and K. Ullas Karanth GPL (>= 2) 2012-04-17 application/tgz http://CRAN.R-project.org/package=SPACECAP