From Simon Lane:

Great Swamp produced seven species of Flycatcher this morning with Olive-sided and Alder in addition to the locals – Kingbird, Pewee, Willow, Great-crested and Phoebe.

Olive sided was just past the abandoned farm on White Bridge Road near the wilderness trail parking. Alder calling from the other marshy side of the same road.

Migrant warblers included two Wilson’s, a Worm-eating, a couple of Magnolias, BT Green, Blackpolls and a Nashville.

Best
Simon