Australian Natives in Lilting Limerick

Meet some Australian Natives: Here's an example of one of the limericks
There once was an emu called Squirty,
who always looked scruffy and dirty,
his Mum had enough,
of the dirt and the fluff,
kicked him out in the street,
in the blistering heat
and cried don't you come back til your thirty!
Poor Squirty!