@misc{indiciae96db73acc1dd,
  title = {Sources of variation in migratory movements of animal populations: statistical inference and a selective review of empirical results for birds},
  author = {J.D. Nichols},
  year = {1996},
  url = {https://pubs.usgs.gov/publication/5210766},
  note = {Source identifier: 5210766}
}