Great Shearwaters turning up off Australia?

Two great shearwaters in the foreground and two sooty shearwaters in the background

Simon Mustoe who lives in Australia has been seeing Great shearwaters off the southern coast of Australia.  This is extremely rare.  Great shearwaters should be off the coast of South America or South Africa at this time of year and would migrate to the North Atlantic as summer approaches.  Read his article on Bird-O  http://bird-o.com/2011/04/03/the-great-shearwater-invasion/