@misc{indiciae869fdebec2d2,
  title = {Effects of number of circular plots on estimates of avian density and species richness},
  author = {M.L. Morrison and R.W. Mannan and G.L. Dorsey},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/5210264},
  note = {Source identifier: 5210264}
}