My eldest son had noticed an unusual bird, the only description he could give was that it had a reddish head. Considering there were plenty of Crimson Finches around, I wasn't overly convinced it was a different bird, but I looked in any case. This turned out to be an Arafura Fantail, a new bird for me, and I delighted probably more in my two sons studying the birds as they built a nest. Here is one of the photos I took.
the possible culprit - Crimson Finch