@misc{indiciaee85e2c80b043,
  title = {Aging small Canada geese by neck plumage},
  author = {K.F. Higgins and L.J. Schoonover},
  year = {1969},
  doi = {10.2307/3799675},
  url = {https://pubs.usgs.gov/publication/1001476},
  note = {Source identifier: 1001476}
}