As a follow-up to a presentation at the 2015 SMM Bienniel Conference, I am happy to share an online demonstration of Bayesian Mark-Recapture using R and JAGS, available on github. The demonstration presents various Robust Design temporary emigration models, as discussed in a forthcoming paper Rankin et al. 2016 (see below for link to presentation, pre-release draft, and github URL). The demo has both "Fixed effects" models and as well as a Hierarchical Bayesian version which offers many advantages familiar to users of Program MARK, such as: i) individual heterogeneity, ii) recruitment processes, and iii) an alternative type of 'model parsimony' similar to multimodel inference by model averaging. HB is an automatic "Occam's Razor" which helps prevent over-parametrization and smooths over many of the instabilities encountered in Frequentist CMR and AIC-based model averaging, especially for sparse dolphin data. Also, Bayesian models are fully-probabilistic, intuitive, and provide exact inference under low-sample sizes. Link to the demonstration with R and JAGS code (including real bottlenose photo-ID data): https://github.com/faraway1nspace/PCRD_JAGS_demo/ Link to SMM presentation on Hierarchical Bayesian PCRD: https://drive.google.com/file/d/0BxeoeRy1g2judW9UOUxpbkswcGs/ See github Readme file for more information on Bayesian PCRD. Abstract of forthcoming paper accompanying the online tutorial: We present a Hierarchical Bayesian version of Pollock's Closed Robust Design for studying the survival, temporary-migration, and abundance of marked animals. Through simulations and analyses of a bottlenose dolphin photo-identification dataset, we compare several estimation frameworks, including Maximum Likelihood estimation (ML), model-averaging by AICc, as well as Bayesian and Hierarchical Bayesian (HB) procedures. Our results demonstrate a number of advantages of the Bayesian framework over other popular methods. First, for simple fixed-effect models, we show the near-equivalence of Bayesian and ML point-estimates and confidence/credibility intervals. Second, we demonstrate how there is an inherent correlation among temporary-migration and survival parameter estimates in the PCRD, and while this can lead to serious convergence issues and singularities among MLEs, we show that the Bayesian estimates were more reliable. Third, we demonstrate that a Hierarchical Bayesian model with carefully thought-out hyperpriors, can lead to similar parameter estimates and conclusions as multi-model inference by AICc model-averaging. This latter point is especially interesting for mark-recapture practitioners, for whom model-uncertainty and multi-model inference have become a major preoccupation. Lastly, we extend the Hierarchical Bayesian PCRD to include full-capture histories (i.e., by modelling a recruitment process) and individual-level heterogeneity in detection probabilities, which can have important consequences for the range of phenomena studied by the PCRD, as well as lead to large differences in abundance estimates. For example, we estimate 8%-24% more bottlenose dolphins in the western gulf of Shark Bay than previously estimated by ML and AICc-based model-averaging. Other important extensions are discussed. Our Bayesian PCRD models are written in the BUGS-like JAGS language for easy dissemination and customization by the community of capture-mark-recapture practitioners. Robert Rankin Ph.D. Candidate Murdoch University Cetacean Research Unit, School of Veterinary & Life Sciences, 90 South Street, Murdoch WA 6150