@misc{indiciae2aeed53cb4d4,
  title = {Food habits and distribution of wintering canvasbacks, Aythya valisineria, on Chesapeake Bay},
  author = {Matthew C. Perry and F.M. Uhler},
  year = {1988},
  doi = {10.2307/1351718},
  url = {https://pubs.usgs.gov/publication/5220734},
  note = {Source identifier: 5220734}
}