@misc{indiciaeed6dd4b84855,
  title = {Winter survival of female mallards in the lower Mississippi valley},
  author = {K. J. Reinecke and Charles W. Shaiffer and Don Delnicki},
  year = {1987},
  url = {https://pubs.usgs.gov/publication/5221523},
  note = {Source identifier: 5221523}
}