@misc{indiciae4919dc80c8fb,
  title = {Determining population size of territorial red-winged blackbirds},
  author = {P.H. Albers},
  year = {1976},
  doi = {10.2307/3800574},
  url = {https://pubs.usgs.gov/publication/5222343},
  note = {Source identifier: 5222343}
}