@misc{indiciae42f0fda1f55c,
  title = {Effects of body weight and age on the time and pairing of American black ducks},
  author = {Gary R. Hepp},
  year = {1986},
  doi = {10.1093/auk/103.3.477},
  url = {https://pubs.usgs.gov/publication/5222127},
  note = {Source identifier: 5222127}
}