@misc{indiciae92cc8cb082f7,
  title = {Herons and their allies: atlas of Atlantic coast colonies, 1975 and 1976},
  author = {Ronald G. Osborn and Thomas W. Custer},
  year = {1978},
  url = {https://pubs.usgs.gov/publication/fwsobs77\_08},
  note = {Source identifier: fwsobs77\_08}
}