@misc{indiciaee0dcca4a4921,
  title = {A variable circular-plot method for estimated bird numbers},
  author = {R.T. Reynolds and J. M. Scott and R.A. Nussbaum},
  year = {1980},
  doi = {10.2307/1367399},
  url = {https://pubs.usgs.gov/publication/5221568},
  note = {Source identifier: 5221568}
}