Nice warbler fallout this morning in the Locust Ravine.  In addition to the species below, I think I may have seen a Connecticut warbler, but I need some advice on warbler behavior.  This bird was definitely walking (not hopping) on the ground, picking at vegetation, and had complete eye rings. I kept getting glimpses of it as it walked behind a tree and a downed limb.  It was not boldly marked as far as a hood, so I would think either female or immature.  My question is, what other warblers feed by walking along on the ground?  This was definitely not an ovenbird (no breast spots or orange crown stripe) or a waterthrush (eye rings, not a pale eyebrow).