@misc{indiciaec50c8baf5fd5,
  title = {An evaluation of the distribution and abundance of Common Ravens at Joshua Tree National Monument},
  author = {W.I. Boarman and S.J. Coe},
  year = {2002},
  url = {https://pubs.usgs.gov/publication/1008279},
  note = {Source identifier: 1008279}
}