Rabbits were a common staple food source in Australia until 1950s when the myxoma virus was released which causes the disease myxomatosis.
South Sydney being a poor area, yielded the South Sydney Rabbitohs
You do realise, one hopes, the novel slash film have FA to do with either rabbits or any rabbit related ecological devastation.
The fence served as a navigational aid for a long journey home, had it not existed Daisy, Molly, and Gracie would have had to fall back on the Seven Sisters for directions.
The film itself might well have taught you a great deal more, specifically about the colonial practices of forced assimilation of "assumed to be dying off" indigenous people and attitudes towards miscegenation.
It's a retelling in film of the biography of sisters who escaped "white capture" to return home across more than a thousand miles of desert.