I'm pretty sure I saw a Brahminy Kite today - my first. It was pretty impressive! There was what looked like a big mud ball in the branches and I wondered if it might be the nest or am I completely off? Bird Finder didn't list it as this far south but it certainly matched the description and photos. I'm at Crescent Head between Coffs Harbour and Port Macquarie.
I saw Brahminy Kite at Tacking Point Lighthouse, Port Macquarie when I worked in Port Macquarie during 2012.
Colour is not easily mistaken for anything else.
Congratulations!!
Peter