@misc{indiciae468870508920,
  title = {Food habits of mute swans in the Chesapeake Bay},
  author = {Matthew C. Perry and P.C. Osenton and E.J.R. Lohnes},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/5211269},
  note = {Source identifier: 5211269}
}