@misc{indiciaec2a142c2de4d,
  title = {Recent trends in counts of migrant hawks from northeastern North America},
  author = {Kimberly Titus and Mark R. Fuller},
  year = {1990},
  doi = {10.2307/3809660},
  url = {https://pubs.usgs.gov/publication/5222407},
  note = {Source identifier: 5222407}
}