Advancing our understanding of the non-breeding distribution of Cerulean Warbler (Setophaga cerulea) in the Andes

  • Authors: Colorado, Gabriel J.; Hamel, Paul B.; Rodewald, Amanda D.; Mehlman, David.
  • Publication Year: 2012
  • Publication Series: Scientific Journal (JRNL)
  • Source: Ornitologia Neotropical 23:307–315

Abstract

Recent population declines have prompted the International Union for the Conservation of Nature to list Cerulean Warbler (Setophaga cerulea: Parulidae) as a Vulnerable species. It is believed that this decline may be related to habitat loss through its entire range, mainly due to deforestation and degradation of its habitats. In response, members of El Grupo Cerúleo, a subcommittee of the Cerulean Warbler Technical Group that addresses wintering ground issues faced by the species, developed a predictive model of wintering habitat for Cerulean Warblers throughout the northern and central Andes. From 2006-2010, we conducted field surveys in Venezuela, Colombia, Ecuador and Peru to validate the winter habitat model. In this paper, we share new insights into the distribution of Cerulean Warblers and preview recent analyses of the ability of the habitat model to predict wintering range. First, our data show that Cerulean Warblers occupy a broader altitudinal range than previously thought. Second, wintering Cerulean Warblers utilize a wider variety of habitat types than formerly believed, including different successional stages and intensively-managed agroecosystems. Third, the species shows a strong association with mixed-species flocks, composed mostly of resident bird species. Collectively, these findings have important implications for conservation efforts in the Andes.

  • Citation: Colorado, Gabriel J.; Hamel, Paul B.; Rodewald, Amanda D.; Mehlman, David. 2012. Advancing our understanding of the non-breeding distribution of Cerulean Warbler (Setophaga cerulea) in the Andes. Ornitologia Neotropical 23:307–315.
  • Keywords: Cerulean Warbler, Setophaga cerulea, El Grupo Cerúleo, modeling assessment, distributional maps
  • Posted Date: September 20, 2013
  • Modified Date: November 7, 2013
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.