@misc{indiciaed65accdc6763,
  title = {Confinement, behavior and performance with examples from poultry.},
  author = {P B Siegel and W B Gross},
  year = {1973},
  doi = {10.2527/jas1973.372612x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4795914/},
  note = {Source identifier: 4795914}
}