@misc{indiciae4949d9023b91,
  title = {Siblicide, splayed-toes-flight display, and grappling in the Saker Falcon},
  author = {D. H. Ellis and P.L. Whitlock and Pu Tsengeg and R.W. Nelson},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/5223825},
  note = {Source identifier: 5223825}
}