Booker T Park - MacGillivray's Warbler
A getting-late-in-the-season MacGillivray's Warbler was seen at Booker T Washington Park in Contra Costa County. Not sure if this is the same bird Ethan Monk and Noah Arthur reported in early September? A handful of birders tried to relocate the Blackpoll Warbler without success.
My MacGillivray's report can be found here: https://ebird.org/checklist/S95309537