@misc{indiciaeddf8cf5c3b1b,
  title = {Hybridization of Canada geese with blue geese in the wild},
  author = {H.K. Nelson},
  year = {1952},
  doi = {10.2307/4081022},
  url = {https://pubs.usgs.gov/publication/1001374},
  note = {Source identifier: 1001374}
}