For The Birds… Visit Audubon Sanctuary Atop Franklin Mountain By LIBBY CUDMORE • Special to www.AllOTSEGO.com “TeacherTeacher. TeacherTeacher.” ONEONTA – That’s an Ovenbird,” said Andy Mason, co-president of the Delaware-Otsego Audubon Sanctuary. “In all the years I’ve been birding, I’ve only ever seen two, and one of those times was because I almost stepped on a nest.” Named for their dome-shaped nest built on the ground, the Ovenbird is one of more than 100 species of birds who make their…