And here is one of the adult birds back with a little food for them.
I wish I had a big zoom lens so I could really photograph them properly and study them a little more, they have nested in one of our melaleuca trees.
I found this interesting info in -
The Reader's Digest Complete Book of Australian Birds
Only female builds a nest, but males occasionally carry materials - although not necessarily to the nest site. As many as 10 or more males visit a single nest while it contains eggs and most of these participate in the feeding of the nestlings. In a single nesting season, one female may been helped by as many as 24 males.