@misc{indiciae07bfdfaad967,
  title = {Diving duck trends in Chesapeake Bay},
  author = {Matthew C. Perry and P.C. Osenton and E.J.R. Lohnes},
  year = {2001},
  url = {https://pubs.usgs.gov/publication/5224152},
  note = {Source identifier: 5224152}
}