Usually, if your child is born in a foreign country, he automatically becomes a citizen of that country. That was the rule till 20 August 1986 for Australia. Ever since that date, legal specifications have restricted citizenship of the child by virtue of his birth in the country. The legislation has been passed keeping in mind the rise in temporary migration. Before this law was passed, all the children born in Australia were automatically granted Australian citizenship. A migration consultant is the best person to get the knowledge about the laws.