@misc{indiciaea990d26b14ec,
  title = {Improved nasal-saddle marker for mallards},
  author = {Harold A. Doty and R. J. Greenwood},
  year = {1974},
  doi = {10.2307/3800071},
  url = {https://pubs.usgs.gov/publication/1001608},
  note = {Source identifier: 1001608}
}