On our way down from Lamington we camped in a Big4 holiday park just outside Yamba. It was near the river, and in addition to regular Osprey fly-overs, there were Mangrove Gerygones calling in the mangroves. They have a lovely violin-like melodious warbling.
Yet try as I might, I couldnt see them long enough to get a look at them. Every bird I thought was them turned out to be a Brown Thornbill or a Yellow Thornbill. Eventually, on the last day, I went out on the the river mud flats when the tide was out. Here I at last got great views. It wasnt surprising I didnt see them before, they stayed on the river side of the mangroves. I managed to get some decent shots, while in the meantime managing to cut myself with some stray coral. The cut wasnt bad, so it ended up being a good exchange.