@misc{indiciae1d46ae3f4542,
  title = {Overwinter distribution of northern pintail populations in North America},
  author = {Jay B. Hestback},
  year = {1993},
  doi = {10.2307/3809286},
  url = {https://pubs.usgs.gov/publication/5222833},
  note = {Source identifier: 5222833}
}