@misc{indiciae51c8b16a6a5c,
  title = {An analysis of the population dynamics of selected avian species, with special reference to changes during the modern pesticide era},
  author = {Charles J. Henny},
  year = {1972},
  url = {https://pubs.usgs.gov/publication/wrr1},
  note = {Source identifier: wrr1}
}