@misc{indiciae826a9c993138,
  title = {Post-breeding territoriality and foraging behavior in Costa's Hummingbird (Calypte costae)},
  author = {Michael L. Avery and Charles van Riper},
  year = {1993},
  doi = {10.2307/3671618},
  url = {https://pubs.usgs.gov/publication/70128725},
  note = {Source identifier: 70128725}
}