While visiting the Webber-Rogers conservation land, we found a variety of birds foraging among the reeds along Potters Brook. This species is a warbler? Sparrow?
Getting ready for the fall
john's f-stop
Photography and image manipulations by john h. gregory
john's f-stop 
I’m thinking it’s an adult female redwing blackbird. Size is hard to judge from photos and if it’s too small I withdraw the guess. But the habitat is right.
That could be right. I recall blackbirds in the area and among this grouping.