@misc{indiciae07360f944925,
  title = {California mallards: a review},
  author = {Cliff L. Feldheim and Joshua T. Ackerman and Shaun L. Oldenburger and John M. Eadie and Joseph P. Fleskes and Gregory S. Yarris},
  year = {2018},
  url = {https://pubs.usgs.gov/publication/70200790},
  note = {Source identifier: 70200790}
}