@misc{indiciae0e487dc75ccc,
  title = {Teaching migration routes to canada geese and trumpeter swans using ultralight aircraft, 1990-2001},
  author = {William J.L. Sladen and William A. Lishman and D. H. Ellis and G.G. Shire and D.L. Rininger},
  year = {2002},
  url = {https://pubs.usgs.gov/publication/5211213},
  note = {Source identifier: 5211213}
}