@misc{indiciaeca59fd10ccfe,
  title = {Effects of management practices of grassland birds: Savannah Sparrow},
  author = {David A. Swanson},
  year = {1998},
  doi = {10.3133/70159923},
  url = {https://pubs.usgs.gov/publication/70159923},
  note = {Source identifier: 70159923}
}