Adults. Spring is in the air! You can already hear the winter resident birds singing for mates, and the earliest migrants are starting to arrive. Join a naturalist to search for birds along the trails. Bring binoculars or borrow ours. Register here. Date:Friday, March 31 Time:8 am - 9:30 am Location: Great Swamp Outdoor Education Center, 247 Southern Boulevard, Chatham Township, NJ 07928 Cost:$7 per person. Contact:Preregistration is required. For more information, 973.635.6629.