@misc{indiciae06f546790ddc,
  title = {Evaluation of a reproductive index for estimating productivity of grassland breeding birds},
  author = {M.R. Morgan and C. Norment and M.C. Runge},
  year = {2010},
  doi = {10.1525/auk.2009.09132},
  url = {https://pubs.usgs.gov/publication/70035268},
  note = {Source identifier: 70035268}
}