@misc{indiciae720a350853a8,
  title = {Thirtieth winter bird-population study. 68. Abandoned field},
  author = {M.K. Klimkiewicz and L. Teuber},
  year = {1978},
  url = {https://pubs.usgs.gov/publication/5222963},
  note = {Source identifier: 5222963}
}