Willow Warbler

Phylloscopus trochilus

A recent addition to the avifauna of North America, this species has proved to be a semi-regular vagrant to the Pribilofs in the fall during the 2010s. Recent records have mostly been clustered during the final week of August, which is likely the best time to look for this species in the islands, though an outlier record from late September suggests that occurrences could happen through much of the fall period.

Willow Warbler by Cory Gregory 1024x683 - Willow Warbler
Photo by Cory Gregory
Willow Warbler by Doug Gochfeld - Willow Warbler
Photo by Doug Gochfeld
Willow Warbler by Sulli Gibson 1024x683 - Willow Warbler
Photo by Sulli Gibson
Willow Warbler 2 by Doug Gochfeld 1024x539 - Willow Warbler
Photo by Doug Gochfeld