@misc{indiciae2c9376fd913e,
  title = {Factors affecting the distribution of mallards wintering in the Mississippi Alluvial Valley},
  author = {James D. Nichols and Kenneth J. Reinecke and James E. Hines},
  year = {1983},
  doi = {10.1093/auk/100.4.932},
  url = {https://pubs.usgs.gov/publication/5221832},
  note = {Source identifier: 5221832}
}