This species is a rare, nearly annual spring migrant with most birds arriving during the second half of May. As with all waterfowl, swans will occasionally linger for long periods (up to five months in one case) with all but one of the summer and early fall (pre-October) records being accounted for by lingering birds […]
This species has shown no obvious pattern of occurrence during the traditional season (May-September) of bird observations in the Pribilofs. It is quite likely that this species is most commonly found on the islands in the very early spring or late fall/early winter, which is in line with their occurrence in the Aleutian Islands to […]
This species has only been recorded three times within the Pribilofs, all from September with two records on St. Paul Island and one from St. George Island. Despite the few records, this species’ population has increased dramatically since the 1990s and an increase in sightings from the Pribilofs would not be unexpected; it is most […]
The 11 records of this species in the Pribilofs suggest two peak times of occurrence: mid-May and from late August to early September. Similar in pattern to this species’ American counterpart (Blue-winged Teal Anas discors) it should be expected towards the late end of the spring waterfowl migration and on the early end of the […]
This species is found regularly in the spring and fall. They are most often seen between May 10th and June 1st, with scattered records from before and after that period in the spring. It has lingered into the early-mid summer as well as occasionally arriving as a summer wanderer in June and July. It is […]
One of the rarer species of American waterfowl that is regularly seen in the Pribilofs, this species is found every other year on average in recent years. Most sightings occur during May with the majority of sightings between the 15th and 20th of that month. The species is seen sporadically later into the spring and […]
This duck displays a very unusual pattern compared to most with no May records and five out of seven records from the month of June, which is later than when the majority of waterfowl migrate. Most records are during the first week of that month. There is also an April record which falls during the […]
This is perhaps the most common species during spring migration that breeds exclusively in the Old World and is a typical part of the Pribilof avifauna. Eurasian Wigeons are normally present prior to coverage in May (likely arriving in mid-late April) with the species being regularly seen through mid-late June and even beyond. Summer arrivals […]
This species is found regularly each spring, however, numbers can vary from year-to-year and it is typically never as common as the Eurasian Wigeon (Anas penelope). It is regularly outnumbered by a 2:1 margin and only rarely outnumbers its Asian counterpart. Like many other species of waterfowl, American Wigeons tend to peak in numbers in […]
