@misc{indiciae8415d61a01e7,
  title = {Bird censuses 77-82: Kentucky bluegrass prairie and mixed prairies I-V},
  author = {Douglas H. Johnson and M.D. Schwartz},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/1001407},
  note = {Source identifier: 1001407}
}