@misc{indiciaea5862bf8bfa5,
  title = {Industrial strength herons: The Black-crowns of Baltimore},
  author = {R.M. Erwin and V.P. Anders and K. Miles-Iverson},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/5222401},
  note = {Source identifier: 5222401}
}