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References

  • Bildstein, K.L., Smith, J.P., Ruelas, Inzunza, E. & Veit, R.R. (Eds). (2008). State of North America's birds of prey. Series in Ornithology No. 3. Washington, DC: Nuttall Ornithological Club and American Ornithologists' Union.
  • Brown, J.L. (1969). Territorial behavior and population regulation in birds. Wilson Bull. 81, 293328.
  • Gill, F.B. (2006). Ornithology. 3rd Edition. San Francisco: Freeman.
  • Katzner, J.A.R., Ivy, E.A., Bragin, E., Milner-Gulland, J. & DeWoody, J.A. (2011). Conservation implications of inaccurate estimate of cryptic population size. Anim. Conserv, doi: DOI: 10.1111/j.1469-1795.2011.00444.x.
  • Mace, G.M., Collar, N.J., Gaston, K.J., Hilton-Taylor, C., Akçakaya, H.R., Leader-Williams, N., Milner-Gulland, E.J. & Stuart, S.M. (2008). Quantification of extinction risk: IUCN's system for classifying threatened species. Conserv. Biol. 22, 14241442.
  • Newton, I. (2008). The migration ecology of birds. London: Academic Press.
  • Place, J., Kaiser-Antonowich, R., Henckel, E. & Henckel, J. (2001). Movements of marked and radio-tagged Turkey vultures in and around Northwestern New Jersey, USA. In Hawks in the Americas: 4352. Bildstein, K.L. & Klem, D.Jr (Eds) North Wales: Hawk Migration Association of North America.
  • Ralph, C.J. & Scott, J.M. (Eds) (1981). Estimating numbers of terrestrial birds. Studies in Avian Biology No. 6.. Camarillo: Cooper Ornithological Society.