@misc{indiciaea5208cfb0013,
  title = {Orphaned mallard brood travels alone from nest to water},
  author = {Gary L. Krapu and C.P. Dwyer and C.R. Luna},
  year = {1991},
  doi = {10.2307/1368217},
  url = {https://pubs.usgs.gov/publication/1001404},
  note = {Source identifier: 1001404}
}