@misc{indiciae5ae4883a3dec,
  title = {Pronounced variation in tarsal and foot feathering in the upland buzzard (Buteo hemilasius) in Mongolia},
  author = {D. H. Ellis and N. Woffinden and P.L. Whitlock and Pu Tsengeg},
  year = {1999},
  url = {https://pubs.usgs.gov/publication/5223886},
  note = {Source identifier: 5223886}
}