Portland State University. Department of Biology
Michael T. Murphy
Date of Award
Master of Science (M.S.) in Biology
1 online resource (v, 87 pages)
Flycatchers -- Oklahoma -- Population, Flycatchers -- Migration -- Oklahoma, Flycatchers -- Habitat -- Oklahoma, Grassland birds -- Oklahoma
Survivorship (the likelihood of survival from one year to the next) and breeding dispersal (movement between breeding seasons) exhibit considerable variability at both the inter- and intraspecific levels. Using eight years of data (2008-2015), from my study site in southwest Oklahoma, I characterized survivorship and breeding dispersal of the Scissor-tailed Flycatcher (Tyrannus forficatus) in a mixed-grass prairie ecoregion. My results suggest that estimated survivorship of Scissor-tailed Flycatchers is low, especially to the congeneric Eastern Kingbird (T. tyrannus), and was likely underestimated due to the tendency of Scissor-tailed Flycatchers to disperse long distances.
Becker, Adam John, "Survivorship and Breeding Dispersal Patterns of a Migratory, Socially Monogamous Passerine; the Scissor-tailed Flycatcher (Tyrannus forficatus)" (2016). Dissertations and Theses. Paper 2653.