If you want drought tolerant, highly adaptive plants in your garden that encourage native wildlife, it's not that hard to do. You simply just need a little understanding of the needs of the native ecosystem and to replicate it in your backyard.
Adding some native species of plants to your garden helps to provide shelter, food and a place to call home for many of our threatened native birds and fauna.
Something else that you can do to help native wildlife is to not remove trees that have hollows in them. In Australia many native species need tree hollows, including 17 % of bird species, 42 % of mammals and 28 % of reptiles (Gibbons and Lindenmayer 1997). They include bats, possums, gliders, owls, parrots, antechinus, ducks, rosellas and kingfishers as well as numerous species of snakes, frogs and skinks. http://www.wires.org.au/wildlife-info/wildlife-education/tree-hollows-for-wildlife
Knowing what types of plants to plant is the hard part but it is easily overcome with a number of resources out there from local councils and bush regeneration planting groups.
Sydney resources:
https://www.rbgsyd.nsw.gov.au/plant_info/Plants_for_gardens/growing_native_plants_in_sydney
https://www.rbgsyd.nsw.gov.au/plant_info/Plants_for_gardens/plants_for_wildlife
Melbourne resources:
www.yarracity.vic.gov.au/DownloadDocument.ashx?DocumentID=7905
Adelaide resources:
http://www.naturalresources.sa.gov.au/adelaidemtloftyranges/plants-and-animals/native-plants-animals-and-biodiversity/urban-biodiversity
Australia wide resources:
http://www.abc.net.au/gardening/factsheets/native.htm
http://anpsa.org.au/links.html
http://anpsa.org.au/links.html#region