@misc{indiciaea34f9db556d0,
  title = {Effectiveness of artificial nesting structures for Ferruginous Hawks in Wyoming},
  author = {James R. Tigner and Mayo W. Call and Michael N. Kochert},
  year = {1996},
  url = {https://pubs.usgs.gov/publication/70211031},
  note = {Source identifier: 70211031}
}