This is a difficult species to assess in the Pribilofs. A regular vagrant to the western Aleutians during the spring where the similar Arctic Warbler (Phylloscopus borealis) has not been recorded, there is only one conclusively documented record from the Pribilofs (St. Paul Island). However, some late fall records of the aforementioned species from late September and early October have been suspected of being this species. Future records, while possible in the spring (likely early June), are most likely to occur in the second half of September or early October.
