Literature
  • Brom 1992
  • Collecting efforts and identification standards in relation to bird strike statistics. 21 Meeting Bird Strike Committee Europe (Jerusalem). Working Paper 28.
  • Laybourne 1974
  • Collision between a vulture and an aircraft at an altitude of 37,000 feet. Wilson Bulletin 86: 461-462.
  • Dunning 1993
  • CRC Handbook of Avian Body Masses. CRC Press, Boca Raton, Florida. 371 pp.