Sad to say, on our "VA" Birding Trip we saw the best/most birds in NC! (See my VA reviews). MacKay Refuge on Knotts Island was The Best. It is only about 40 minutes on back roads from Sandbridge (where we were staying). If you take the ride, notice all the tiny cemetery plots in people's yards along the way! (we don't see that in PA) Now on to MacKay.
In ditches along the Marsh Causeway Rd. on the way look for Common Moorhens. Turn in the Entrance Rd. and drive back to the park office. Flycatchers, etc. in fields along the way. Shortly before the office on the left is a pullover and walk up to a viewing platform. Saw an American Bittern, and glossy Ibis, among others. Drive back out and continue on 615, turn left on MacKay Island Road at the park sign. Drive back as far as you can and park by the restrooms and viewing platform (road is blocked at this point). Check out ducks from the viewing platform! Continue walking on MacKay Rd. past the barrier. Large numbers of waders and sandpipers are to be found further back near where the Cross Dike road turns left.
This is mostly distance viewing. GOOD binoculars, a spotting scope and/or long lens camera are helpful.