@misc{indiciae81a1c6ab7b03,
  title = {Visual sensation during pecking in pigeons.},
  author = {J Ostheim},
  year = {1997},
  doi = {10.1076/ejom.35.4.269.13082},
  url = {https://pubmed.ncbi.nlm.nih.gov/9290935/},
  note = {Source identifier: 9290935}
}