@misc{indiciae9c05abbb3b87,
  title = {Population ecology of migratory birds. Papers from a symposium held at the Migratory Bird Populations Station, Laurel, Maryland, 9-10 October 1969},
  author = {T.S. Baskett},
  year = {1972},
  url = {https://pubs.usgs.gov/publication/wrr2},
  note = {Source identifier: wrr2}
}