White-winged Fairy-Wrens

While travelling in WA I was asked by a couple of birders about their
sighting of a Malurus leucopterus edouardi or M.i.leucopterus around
Caernarvon. Both were adamant they had seen the satin black race on the
mainland. No this is way above the pay grade of a seabirder so can anyone
tell me whether either or both of the island black races also turn up on the
mainland around the area?

I did get some beautiful views of an Indic Yellow Nose and a Wandering-type
Diomedea off Kalbarri and wonder whether this was common as well. The
Diomedea seemed a long way north for mine. Ciao