To cite package ‘birp’ in publications use:

  Caduff M, Füglistaler A, Wegmann D, Singer L (2026). _birp: Testing
  for Population Trends Using Low-Cost Ecological Count Data_. R
  package version 0.9.0, <https://CRAN.R-project.org/package=birp>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {birp: Testing for Population Trends Using Low-Cost Ecological Count
Data},
    author = {Madleina Caduff and Andreas Füglistaler and Daniel Wegmann and Liam Singer},
    year = {2026},
    note = {R package version 0.9.0},
    url = {https://CRAN.R-project.org/package=birp},
  }