@misc{indiciae4b95724b5b53,
  title = {Thirty-sixth breeding bird census. 6. Upland tulip tree-maple-oak forest},
  author = {C.S. Robbins},
  year = {1972},
  url = {https://pubs.usgs.gov/publication/5220904},
  note = {Source identifier: 5220904}
}