To cite package ‘pigauto’ in publications use:

  Nakagawa S (2026). _pigauto: Fill in Missing Species Traits Using a
  Phylogenetic Tree_. R package version 0.10.0.9000,
  <https://github.com/itchyshin/pigauto>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {pigauto: Fill in Missing Species Traits Using a Phylogenetic Tree},
    author = {Shinichi Nakagawa},
    year = {2026},
    note = {R package version 0.10.0.9000},
    url = {https://github.com/itchyshin/pigauto},
  }