@misc{indiciae1027b26aad17,
  title = {First breeding records of whooping swan and brambling in North America at Attu Island, Alaska},
  author = {P.W. Sykes and D.W. Sonneborn},
  year = {1998},
  doi = {10.2307/1369909},
  url = {https://pubs.usgs.gov/publication/5223432},
  note = {Source identifier: 5223432}
}