And little did I know that the very next day there'd be a rarity of an even higher magnitude... While we were already birding at the coast looking for vagrants to discover we suddenly got notified of a nearby red-eyed vireo! This is only the second Belgian record, and only the 12th record of any American passerine in the country... The bird was fairly difficult to connect with but eventually gave great views, towards the end of the day it was also briefly foraging together with a yellow-browed warbler (a rare Asian migrant) in the same tree!
665) Red-eyed vireo, Vireo olivaceus
In the morning we also went back to the Pallas' grasshopper warbler (which was now in a much more traditional location - a large patch of beachgrass), meaning we got two of the rarest passerines ever recorded in Belgium in one day!