Blackpoll Warbler (Setophaga striata) 15 October 2020. Vista Grande Canal, Lake Merced, San Francisco, California.
This species has one of the longest non-stop migration of any song bird. Most of the population migrates over the Atlantic Ocean from Canada to South America. However a few individuals are apparently mirror-image misoriented and migrate towards the West Coast instead to the East. Here are two such individuals, one more colorful than the other. In Fall plumage as seen here, they can be confused with other species such as Bay-breasted or Pine Warbler. Notice the pink legs and feet, the white undertail coverts and the lightly streaked mantle. Canon SX70 HS.