This species is encountered on an annual basis in the Pribilofs in small numbers, mostly during spring and/or fall. In springs with sightings it is often seen only once during the season, with nearly all of the records during spring coming from late May and only eight of those records from the first two weeks of June. There are a few late spring migrants during the summer period in late June, while the records from July likely pertain to early fall migrants. This species is most frequently encountered in the islands during the fall, with August 20th-September 10th being the peak of occurrence. There are only four earlier records in August and four records involving arrivals after the first week of September.