@misc{indiciae6d647fe3281c,
  title = {Winter distribution of willow flycatcher subspecies},
  author = {Eben H. Paxton and Philip Unitt and Mark K. Sogge and Mary Whitfield and Paul Keim},
  year = {2011},
  doi = {10.1525/cond.2011.090200},
  url = {https://pubs.usgs.gov/publication/70005478},
  note = {Source identifier: 70005478}
}