@misc{indiciaec9a364f62daf,
  title = {Birds of North America - A Guide to Field Identification},
  author = {C.S. Robbins and B. Bruun and H.S. Zim},
  year = {1966},
  url = {https://pubs.usgs.gov/publication/5200005},
  note = {Source identifier: 5200005}
}