@misc{indiciae9b0d456e7698,
  title = {Benefits, costs, and determinants of dominance in American black ducks},
  author = {Gary R. Hepp},
  year = {1989},
  doi = {10.1163/156853989x00240},
  url = {https://pubs.usgs.gov/publication/5222313},
  note = {Source identifier: 5222313}
}