@misc{indiciae984aed157060,
  title = {Age determination of female redhead ducks},
  author = {C.W. Dane and Douglas H. Johnson},
  year = {1975},
  doi = {10.2307/3799901},
  url = {https://pubs.usgs.gov/publication/1001648},
  note = {Source identifier: 1001648}
}