@misc{indiciaefec044a2d577,
  title = {Responses to human intruders by birds nesting in colonies: Experimental results and management guidelines},
  author = {R.M. Erwin},
  year = {1989},
  doi = {10.2307/1521318},
  url = {https://pubs.usgs.gov/publication/5222260},
  note = {Source identifier: 5222260}
}