An R package to simulate and analyze data using N-mixture models (both with and without distance sampling). The package is still under development and doesn't have full documentation yet.
The package was inspired by Link et al. (2018) and is designed to perform similar analyses.
Link, William A., Matthew R. Schofield, Richard J. Barker, and John R. Sauer. “On the Robustness of N-Mixture Models.” Ecology 99, no. 7 (2018): 1547–51. https://doi.org/10.1002/ecy.2362.