I am interested in the mechanistic drivers of migration in passerine birds. My dissertation tested hypotheses for the evolution of migration by contrasting different types of migrants within the Tyrannus (Kingbird) genus. My fieldwork was focused in northern South America, with field sites in Colombia, Venezuela, and Guyana studying overwintering austral migrant Fork-tailed Flycatchers (Tyrannus savanna; MacPherson et al. revised and resubmitted to Ecology & Evolution). When I wasn't in the field catching birds for my dissertation, I could be found doing morphometric measurements of museum specimens (MacPherson and Jahn in Prep) or analyzing geolocator data gathered from a collaboration with Aves Internacionales (MacPherson et al. revised and resubmitted to The Auk). My ultimate goal is to better understand how seasonal pressures can affect migratory bird populations so that we can better understand how to protect them. I am currently a post doctoral researcher learning how to use more mechanistic methods to build species distribution models using Bayesian Belief Networks.