@misc{indiciaeed61a2c87973,
  title = {Nest and brood attentiveness in female black ducks},
  author = {J.K. Ringelman and J. R. Longcore and R.B. Owen},
  year = {1982},
  doi = {10.2307/1367831},
  url = {https://pubs.usgs.gov/publication/5221744},
  note = {Source identifier: 5221744}
}