Neotropical Birds has been integrated into the new Birds of the World , a powerful research database offering species accounts for every species on earth.
While Birds of the World is a subscription service, we remain committed to offering this content to Neotropical Birds contributors and to those unable to pay for it through our scholarship program. Learn more at birdsoftheworld.org.
This website will no longer be available after March 30, 2020.

Fork-tailed Flycatcher Tyrannus savana

  • Order: Passeriformes
  • Family: Tyrannidae
  • Polytypic: 4 subspecies
  • Authors: Alex. E. Jahn and D. T. Tuero
Sections

Demography and Populations

Three fledglings per nest are produced in Argentina (Mezquida 2002), two per nest in Santa Cruz Department, Bolivia (AEJ, A.M. Mamani, and V. Bejarano, unpublished data), and one per nest in central Brazil (Marini et al. 2009). In central Brazil, the nest success rate from 2003 to 2007 was ca 53% (Marini et al. 2009). During three years (2010-2012) at a site in Buenos Aires Province, Argentina, it was 48% (DTT and AEJ, unpublished data), and in Santa Cruz Department, Bolivia it was 44% over two years (2010 and 2011; AEJ, A.M. Mamani, and V. Bejarano, unpublished data). There is currently no information available on such variables as age at first breeding, life span and survivorship, dispersal, or population regulation for Fork-tailed Flycatcher.

Fork-tailed Flycatcher is parasitized by the feather mite Trouessartia savanae (Hernandes 2014).

Recommended Citation

Jahn, A. E. and D. T. Tuero (2013). Fork-tailed Flycatcher (Tyrannus savana), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.fotfly.01