@misc{indiciaeabb61fb3ceb6,
  title = {Distribution and abundance of the least Bell's vireo (Vireo bellii pusillus) and the southwestern willow flycatcher (Empidonax traillii extimus) at selected southern California sites in 1997},
  author = {B.E. Kus and P.P. Beck},
  year = {1998},
  url = {https://pubs.usgs.gov/publication/96658},
  note = {Source identifier: 96658}
}