Guided barnstable harbor tour Join Capt. Avery for a Guided Barnstable Harbor Tour aboard “Gravy”.   Bird Watchers, Nature Lovers and Tourists enjoy the chance sit under an Osprey Nest, visit a Common Tern Nursery, watch Great Blue Herons flying low across the marsh, see Gannets dive-bomb their prey, or the local Oyster Catchers with their orange bills … Continue reading Guided Barnstable Harbor Tours