@misc{indiciae35f836265d87,
  title = {Fluctuating survival selection explains variation in avian group size},
  author = {Charles B. Brown and Mary Bomberger Brown and Erin A. Roche and Valerie A O'brien and Catherine E. Page},
  year = {2016},
  doi = {10.1073/pnas.1600218113},
  url = {https://pubs.usgs.gov/publication/70170551},
  note = {Source identifier: 70170551}
}