@misc{indiciaedf36ba1310ed,
  title = {25th winter bird-population study. 8. Hickory-oak-ash floodplain forest},
  author = {C.S. Robbins},
  year = {1972},
  url = {https://pubs.usgs.gov/publication/5220900},
  note = {Source identifier: 5220900}
}