@misc{indiciae5d91da6a2248,
  title = {Slaty-backed Gull in Sullivan Co., NY},
  author = {V. Freer and J. Haas and P. A. Buckley},
  year = {2002},
  url = {https://pubs.usgs.gov/publication/5224227},
  note = {Source identifier: 5224227}
}