Flexible Occupancy Estimation with Stan R package flocker version 1.0-2 Fit occupancy models in 'Stan' via 'brms'. The full variety of 'brms' formula-based effects structures are available to use in multiple classes of occupancy model, including single-season models, models with data augmentation for never-observed species, dynamic (multiseason) models with explicit colonization and extinction processes, and dynamic models with autologistic occupancy dynamics. Formulas can be specified for all relevant distributional terms, including detection and one or more of occupancy, colonization, extinction, and autologistic depending on the model type. Several important forms of model post-processing are provided. References: Bürkner (2017) <doi:10.18637/jss.v080.i01>; Carpenter et al. (2017) <doi:10.18637/jss.v076.i01>; Socolar & Mills (2023) <doi:10.1101/2023.10.26.564080>. Software Depends: R (>= 4.1.0) Imports: abind, assertthat, boot, brms (>= 2.20.3), loo (>= 2.0.0), MASS, matrixStats, stats, utils, withr Suggests: BH (>= 1.75.0-0), knitr, RcppEigen (>= 0.3.3.9.3), rmarkdown, rstan (>= 2.26.0), spelling, testthat (>= 2.1.0), tibble Jacob B. Socolar <jacob.socolar@gmail.com> Comprehensive R Archive Network (CRAN) Jacob B. Socolar [aut, cre, cph], Simon C. Mills [aut], Paul-Christian Bürkner [ctb] BSD_3_clause + file LICENSE (https://CRAN.R-project.org/package=flocker/LICENSE) 2026-06-22 application/tgz https://CRAN.R-project.org/package=flocker doi:10.32614/CRAN.package.flocker en-US