The Altamaha is a great place to do some birdwatching. Great opportunities can be found the length of the river. Begin at Bullard's Creek WMA and work your way down to the nature watching area in the Georgia Colonial Coast Birding Trail. Check out the GaDNR website and your favorite bird watching website for more information.
There are several smartphone apps that guide you on your way. You can easily share your sightings with others.