While photographing birds at the Ku-ring-gai Wildflower Garden recently I looked across to a sunny patch in the undergrowth to see a large Red-bellied Black Snake keeping an eye on me. He was partly obscured by the foliage but got a few good shots - glad I had the 500mm lens fitted so could keep a far enough away as not to frighten him off. We were next to a large pond that has lots of frogs and as he slithered back into the reeds around the pond I could see from the size of him that the frogs kept him well fed!
Got some reasonable bird photos as well here is a one of the Yellow Robins that were very active that morning.