We are in WA and used an unknown donor,
Our our buba boy's birth cert if states mother 1 (Me, Tummy Mummy) & mother 2 (my partner- other mummy)

We don't have a section for father der cause our bubs doesn't have one.
We had to ring briths/deaths & Marriages to get a special birth cert application form

congrats on your bub buy the way

xx
B