@misc{indiciae2aba1db46e01,
  title = {Thirteenth breeding-bird census. 10. Mature and lumbered oak-maple ridge forest},
  author = {C.S. Robbins},
  year = {1949},
  url = {https://pubs.usgs.gov/publication/5220308},
  note = {Source identifier: 5220308}
}