@misc{indiciaea5e140dc1d74,
  title = {Sex ratios of canvasbacks wintering in Louisiana},
  author = {Dennis W. Woolington},
  year = {1993},
  doi = {10.2307/3809075},
  url = {https://pubs.usgs.gov/publication/70202127},
  note = {Source identifier: 70202127}
}