@misc{indiciaeb4f51c582b36,
  title = {Artificial cavities enhance breeding bird densities in managed cottonwood forests},
  author = {D.J. Twedt and J. L. Henne-Kerr},
  year = {2001},
  url = {https://pubs.usgs.gov/publication/5224066},
  note = {Source identifier: 5224066}
}