The Pacific pocket mouse (Perognathus longimembris pacificus), an endangered subspecies, persists in only 3 known wild populations. The Pacific Pocket Mouse Conservation Breeding and Reintroduction Program aims to establish additional wild populations by selecting and restoring suitable habitats within their historic range of coastal southern California. Optimal habitat consists of open, sandy soils that facilitate burrow construction within coastal sage scrub that provides cover and food resources. Many potential reintroduction sites occur near military installations or airports that generate chronic and acute noise pollution. Research on related small mammals indicates that anthropogenic noise can disrupt communication, foraging, movement, and activity patterns, potentially reducing fitness. We evaluated whether experimental exposure to airport noise alters Pacific pocket mouse foraging behavior and nightly activity budgets relative to noise-free periods. We exposed individuals to recorded airport noise representative of the frequency and sound levels at potential receiver sites and quantified behavioral responses through video observations and daily seed consumption over a five-week period. Results from this study will clarify whether airport noise poses behavioral risks to the species and inform the selection of future reintroduction sites.