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Boesman, P.; Curson, J. 1995. Grey-headed Warbler Basileuterus griseiceps in danger of extinction? Cotinga: 35-39. Bond, R. E.; Convey, P.; Sharpe, C. J.; Varey, A. 1989. Cambridge Columbus zoological expedition to Venezuela 1988. University of Cambridge , Cambridge, UK. Collar, N. J.; Gonzaga, L. P.; Krabbe, N.; Madroño Nieto, A.; Naranjo, L. G.; Parker, T. A.; Wege, D. C. 1992. Threatened birds of the Americas: the ICBP/IUCN Red Data Book. International Council for Bird Preservation, Cambridge, U.K. Colvee, J. N. 1999. Observaciones preliminares sobre el estado actual del hábitat de cuatro especies de aves en la Serranía de Turimiquire, Edos. Monagas, Anzoátegui y Sucre de Venezuela. Evans, K.; King, R.; Calvert, N.; Brunton, D.; Jolles, A. 1994. Paria Peninsula `94: Final Report. An Oxford University Ornithological Expedition to Venezuela. Hayes, F. E. 1996. Project Sabrewing: status, ecology and behaviour of the White-tailed Sabrewing (Campylopterus ensipennis) on Tobago, West Indies. Hayes, F. E.; Trimm, N. A.; Sanasie, B.; ffrench, R. P. 2000. Breeding biology of the White-tailed Sabrewing at Tobago, West Indies. Journal of Field Ornithology 71: 597-605. IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: http://www.iucnredlist.org. (Accessed: 19 June 2012). Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago. |
| Citation: | BirdLife International 2012. Campylopterus ensipennis. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 25 May 2013. |
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