Rob Morris has advised me that in 25 years he had not had any summer records of Australasian Gannets off Southport, Queensland. I checked my records and found that I only had early spring records, but no summer records of Australasian Gannets in northern NSW so I withdraw my earlier comment.
Regards
Greg Dr Greg. P. Clancy Ecologist and Birding-wildlife Guide PO Box 63 Coutts Crossing NSW 2460 0266493153 0429601960