Remember, you are. Give snakes a wide berth and leave them alone. They have more right to be there than you do. Walk around delicate plants. Don't feed birds and animals around campsites or they may become pests.
Unnatural food can be harmful to many species.
Many places have spiritual or cultural significance for Aborigines. Treat such places with consideration and respect. Obtain permission from traditional landowners or the relevant land manager to visit sensitive areas. Leave Aboriginal relies as you find them. Don't touch paintings or rock engravings.