I've only seen them in the zoo, not Dubbo itself. They are generally not too shy around the public, letting you get fairly close. They're also noisy when in a group (especially when settling down for the night). I've seen them a few times at WPZ, and White-browed Babblers too. You just have to keep your eyes open!
I have a mob which lives at my place. Very chatty interesting birds. Their numbers fluctuate a lot and I was concerned mine would die out. I started with 5 and the numbers dropped to 3 before they raised a couple more chicks. They have been successful breeding again the last couple of years as I have 9 now and another group has appeared about 1km away. I am not sure if a few of mine moved or this is from another nearby colony.