Abundance, and Habitat Characteristics of the Buff-Breasted Flycatcher in Arizona Distribution

Geographic range and numbers of Buff-breasted Flycatchers (Empidonax fulvifrons) have decreased in Arizona in this century. We conducted surveys to locate additional populations, and studied habitat use in relation to availability, and reproductive success. Results suggested thai some small populations have disappeared but that others have increased. We estimated reproductive success using an index based on adults' behavior. We found 67 Buff-breasted Flycatcher nests constructed by 44 pairs. Distance to opening was positively correlated with reproductive success rank. We compared used to available areas and nest sites to used areas and found that Buff-breasted Flycatchers inhabited areas dominated by pines, with a sparse oak understory. We found significant associations between Buff-breasted Flycatcher presence and vegetation type, structural stage, canopy cover, and forest patch width. We developed a habitat model to help manage this rare species. We recommend continued monitoring of Buff-breasted Flycatcher populations and creation of open pine forest with an open understory of oak. Fire may facilitate development of potential habitat.

Distribution, Abundance, and Habitat Characteristics of the Buff-Breasted Flycatcher in Arizona Academic Article