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Southern Bristle-Tyrant Phylloscartes eximius

  • Order: Passeriformes
  • Family: Tyrannidae
  • Monotypic
  • Authors: Vinicius R. Tonetti and Marco A. Pizo
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Demography and Populations

In the Cantareira State Park (São Paulo, Brazil), Southern Bristle-Tyrant has a very low density, with an estimate of only 12.7 individuals per km2 (confidence interval of 7.3-20.2 individuals) (Tonetti 2015, Tonetti et al. 2017). In comparison, the density of a related, globally threatened congener, Restinga Tyranulet Phylloscartes kronei, is 208 [144–272] individuals per km2,) (Gussoni 2014); another Atlantic Forest insectivorous suboscine, Araucaria Tit-Spinetail Leptasthenura setaria has an estimated density of 90 individuals per km2; Cabanne et al. 2007). Based on anecdotal observation, it is believed that most species of Phylloscartes occur in low densities (Goerck 1997).

Recommended Citation

Tonetti, V. R. and M. A. Pizo (2019). Southern Bristle-Tyrant (Phylloscartes eximius), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.sobtyr2.01