The Buff-breasted Flycatcher (Empidonax fulvifrons pygmaeus) is a small flycatcher (13 cm [5 in] long; 6-9 g [0.2-0.3 oz]) with a brownish cap and wings, pale neck, and breast and belly with a buffy wash. It forages for flying insects from perch in pines (Pinus spp.) or other trees. It occurs in southeastern Arizona, southwestern New Mexico, and south into Mexico. The Buff-breasted Flycatcher will experience a high degree of climate exposure and has a high adaptive capacity. Overall, it has a Climate Change Vulnerability Index ranking of Less Vulnerable under both Representative Concentration Pathway (RCP) 4.5 and RCP 8.5 Scenarios. The Buff-breasted Flycatcher’s climate change vulnerability is impacted by factors related to movement, life history, and evolutionary potential, which influence its ability to shift in space, persist in place, and respond to climate change impacts. It also has documented or modeled responses to climate change that impact its vulnerability score.