@misc{indiciaea7faf0e3e85f,
  title = {Weather conditions associated with beginning of northward migration departures of snow geese},
  author = {Edward L. Flickinger},
  year = {1981},
  doi = {10.2307/3807937},
  url = {https://pubs.usgs.gov/publication/5221700},
  note = {Source identifier: 5221700}
}