@misc{indiciaec8a42c67a3c3,
  title = {Breeding biology and habitat use of black ducks},
  author = {R. Owen and J. Longcore and J. Ringelman and K. Reinecke and K. Hendrix},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/5222785},
  note = {Source identifier: 5222785}
}