@misc{indiciae5c3d03c3a3b6,
  title = {Blood values of the canvasback duck by age, sex and season},
  author = {R. M. Kocan and S.M. Pitts},
  year = {1976},
  doi = {10.7589/0090-3558-12.3.341},
  url = {https://pubs.usgs.gov/publication/5224119},
  note = {Source identifier: 5224119}
}