@misc{indiciaecaada9c3f5af,
  title = {Quantitative studies of bird movement: A methodological review},
  author = {J.D. Nichols and A. Kaiser},
  year = {2009},
  doi = {10.1080/00063659909477256},
  url = {https://pubs.usgs.gov/publication/5223855},
  note = {Source identifier: 5223855}
}