@misc{indiciae720536dd04d6,
  title = {Tundra swan habitat preferences during migration in North Dakota},
  author = {Susan L. Earnst},
  year = {1994},
  doi = {10.2307/3809327},
  url = {https://pubs.usgs.gov/publication/1001115},
  note = {Source identifier: 1001115}
}