@misc{indiciae58ec05861923,
  title = {The effects of a tall tower on nocturnal bird migration: A portable ceilometer study},
  author = {M.L. Avery and P. F. Springer and J.F. Cassel},
  year = {1976},
  url = {https://pubs.usgs.gov/publication/1001830},
  note = {Source identifier: 1001830}
}