Westerville, Ohio. Blendon Woods contains spectacular stream-cut ravines with exposed ripple rock sandstone and open fields surrounded by beech-maple and oak-hickory forests. The 653-acre park is a great place to see a variety of songbirds, waterfowl and other wildlife, especially the flock of wild turkeys meandering about in search of food. The 118-acre Walden Waterfowl Refuge with its 11-acre Thoreau Lake provides a sanctuary for hundreds of birds, ducks and other wildlife. Open year-round, it features two elevated observation shelters with spotting scopes for viewing waterfowl.