@misc{indiciae7b924ca7adae,
  title = {Notes on the ecology of Puerto Rican swifts, including the first record of the white-collared swift Streptoprocne zonaris},
  author = {C. B. Kepler},
  year = {2008},
  doi = {10.1111/j.1474-919x.1972.tb00856.x},
  url = {https://pubs.usgs.gov/publication/5221144},
  note = {Source identifier: 5221144}
}