@misc{indiciaec203bd7fbdc8,
  title = {Do ring doves copulate more than necessary for fertilization?},
  author = {M F Cheng and M Porter and G Ball},
  year = {1981},
  doi = {10.1016/0031-9384(81)90238-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/7323169/},
  note = {Source identifier: 7323169}
}