This species appears to fit the same profile as Sooty Shearwater (Puffinus griseus), with very few known records in the Pribilofs though it is likely a regular pelagic wanderer during the summer months along the continental shelf breaks to the south and west of the islands. The only known sightings of this species are two […]
This is a rare spring, summer, and fall wanderer to the Pribilofs, with more than 20 records since the 1980s. This species is most likely to be found in early summer from June 20th-July 15th, with scattered records in spring from late May and June and during the late summer and fall into October. There […]
An abundant breeding species that can be found easily from May-August, though it is found only rarely in the fall. The earliest arrivals on the island are typically noted in mid-late April and are present in numbers by May, with peak numbers occurring in June and July. The estimated breeding population in the Pribilofs is […]
This is a very rare spring and summer visitor that has been found annually in recent years, though typically only on sporadic dates throughout the spring and summer period. It has been found most commonly as an arrival in late May or early June and there are occasional sightings into the summer period with most […]
This is the last regularly breeding species to arrive on the island in most years as individuals are not found around the islands until about May 20th in most years. After arrival, they become regular sights quickly with typical spring numbers present within a few days of the first sighting most years. Breeding estimates for […]
This species of puffin tends to arrive at the islands more on par with the other species of alcids, most commonly in late April, though in some years it may not be until the first week of May. This species is more apparent during the spring and early summer than the Horned Puffin (Fratercula corniculata), […]
This species is a permanent resident of the islands and their associated waters and is potentially the most ubiquitous bird species in the Pribilofs outside the winter season. It breeds on all of the Pribilof Islands with the largest numbers on St. Paul and St. George Islands. The first birds return to the islands’ cliffs […]
A common, or abundant, species depending on location and timing in the Pribilofs, this species breeds in very large numbers on St. George Island, with smaller numbers on St. Paul and Otter Islands. Much like the Black-legged Kittiwake (Rissa tridactyla), this species typically arrives at the islands each year from mid-March to mid-April depending on […]
This species is a bird of the winter pack ice in the vicinity of the Pribilofs with few local records owing to the general lack of coverage during that season. Most records are from late winter (January-March) when the winter sea ice typically reaches the farthest south and can be present around the islands. There […]
This gull is considered uncommon from spring through fall, with arrivals possible at almost any time from May to October. It is perhaps most likely between May 20th and June 1st during the spring though its pattern of occurrence is not well defined. Occasional individuals are seen through June into the summer with regular records […]
