@misc{indiciaedde39e64dced,
  title = {Survival of female black ducks, Anas rubripes, during the breeding season},
  author = {J.K. Ringelman and J. R. Longcore},
  year = {1983},
  url = {https://pubs.usgs.gov/publication/5221826},
  note = {Source identifier: 5221826}
}