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Red-billed Tyrannulet Zimmerius cinereicapilla

  • Order: Passeriformes
  • Family: Tyrannidae
  • Monotypic
  • Authors: Thomas S. Schulenberg


Conservation Status

Red-billed Tyrannulet has a broad latitudinal distribution, although it occurs only a narrow elevational band along the foothills of the Andes. Based on projected rates of deforestation in the Amazon Basin (including the foothills?), BirdLife International (2015) assesses the IUCN Red List conservation status of Red-billed Tyrannulet as Vulnerable.

The relative abundance of Red-billed Tyrannulet is rated as rare to uncommon (Ecuador; Ridgely and Greenfield 2001a) or uncommon (Peru; Schulenberg et al. 2010), although this species also probably often is overlooked (Ridgely and Greenfield 2001a, Fitzpatrick 2004, Schulenberg et al. 2010).

Effects of human activity on populations

As a species that depends upon forest and has a narrow elevational range, Red-billed Tyrannulet is at risk from human activities that destroy or degrade forests, such as expanding agriculture, mining, road construction, and logging (Fitzpatrick 2004). Red-billed Tyrannulet occurs in some nominally protected areas, however, including Parque Nacional Cordillera Azul and the Manu Biosphere Reserve in Peru (Alverson et al. 2001, Walker et al. 2006), and Parque Nacional Madidi in Bolivia (Alvarez Alonso and Whitney 2001, Hosner et al. 2009).

Recommended Citation

Schulenberg, T. S. (2015). Red-billed Tyrannulet (Zimmerius cinereicapilla), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.