Oven bird, hooded warbler, common yellowthroat, black and white warbler, black-throated green warbler, black-throated blue warbler, yellow-billed cuckoo, Acadian flycatcher, eastern wood pewee, great crested flycatcher, wood thrush, veery, American robin, scarlet tanager, red-eyed vireo, tufted titmouse, black-capped chickadee, eastern towhee, ruffed grouse, common raven, red-bellied woodpecker, downy woodpecker, pileated woodpecker, whippoorwill, barred owl, turkey vulture, barn swallow, blue jay, blue-gray gnatcatcher, red-breasted nuthatch, and field sparrow.
There was a woodpecker that I couldn't identify, and one other bird that I heard but could not place, and I may have missed a few others. Most of these were identified by their call. I didn't have binoculars with me, and only saw a few birds that I could identify without them.
As to wildflowers, these were pretty spectacular. Here are some photos:
Yellow lady slipper - only seen once during the whole 76 miles of hiking
Pink lady slipper
Yellow star grass (ID by my friend, Dick Dreselly):
As to salamanders, we saw two kinds. The red eft, a juvenile and terrestrial stage of the eastern newt (which is aquatic as an adult), was very common, especially during the first three days of the hike, which were fairly wet. We saw them many times.
Best as I can figure, this is a northern slimy salamander, out and about in the trail because of the wet weather on the final day of the hike.