Bayesian Models for Data from Unmarked Animals using 'Stan' R package ubms version 1.2.9 Fit Bayesian hierarchical models of animal abundance and occurrence via the 'rstan' package, the R interface to the 'Stan' C++ library. Supported models include single-season occupancy, dynamic occupancy, and N-mixture abundance models. Covariates on model parameters are specified using a formula-based interface similar to package 'unmarked', while also allowing for estimation of random slope and intercept terms. References: Carpenter et al. (2017) <doi:10.18637/jss.v076.i01>; Fiske and Chandler (2011) <doi:10.18637/jss.v043.i10>. Software Depends: R (>= 3.4.0), unmarked Imports: ggplot2 (>= 2.0.0), gridExtra, loo, Matrix (>= 1.5-0), methods, pbapply, Rcpp (>= 0.12.0), reformulas, rlang, RSpectra, rstan (>= 2.26.0), rstantools (>= 2.0.0), stats LinkingTo: BH (>= 1.66.0), Rcpp (>= 0.12.0), RcppArmadillo (>= 0.9.300.2.0), RcppEigen (>= 0.3.3.3.0), rstan (>= 2.26.0), StanHeaders (>= 2.26.0), RcppParallel (>= 5.0.2) Suggests: knitr, raster, rmarkdown, terra, testthat Ken Kellner <contact@kenkellner.com> Comprehensive R Archive Network (CRAN) Ken Kellner [cre, aut] GPL (>= 3) 2026-04-22 application/tgz https://CRAN.R-project.org/package=ubms doi:10.32614/CRAN.package.ubms