G call(s) all continuous and from a nesting colony, G call(s) chirps, G scold(s) , G call(s) chirps, diving, G scold(s) , G call(s) , G call(s) chirps, G call(s) , G call(s) diving, G call(s) , G call(s) chirps, G call(s) diving, G call(s) diving, G call(s) diving, G call(s) chirps, 12-15 ft from nest, G scold(s) 12-15 ft from nest, G call(s) , G call(s) chirps, G call(s) chirps, diving at recorder (2ft), G call(s) diving at recorder (2ft), G scold(s) diving at recorder (2ft)