@misc{indiciaebb0a87c3746b,
  title = {Survival and band recovery rates of sympatric American black ducks and mallards},
  author = {James D. Nichols and Holliday H. Obrecht and James E. Hines},
  year = {1987},
  doi = {10.2307/3801730},
  url = {https://pubs.usgs.gov/publication/5221533},
  note = {Source identifier: 5221533}
}