Once I harvested as many olives as I could process from our little front yard Olive Grove in Rosebud I left the rest for the birds. Previously I had not noticed many birds feeding on the olives. This year a number of species have enjoyed the late season fruit. I have seen Sulphur-crested Cockatoos, Little Corellas, Silvereyes and now a pair of Crimson Rosellas. I was packing the back of my car only a few feet away and these guys just ignored me. The fruit is very ripe and starting to shrivel so must be quite edible even with their raw bitter flavour.
I have read that most parrots/cockatoos are left handed. The fellow below was right handed, grabbing and eating the olives using his right foot. It was windy at times and he did very well to hang on and feed at the same time.