Aussie in NZ

I am a novice but I bred some when I was a teenager in Sydney. Now I'm in the bottom of the South Island of New Zealand. I'm having no luck getting my birds to breed. I have 6 birds. 4 in the aviary and 2 in a patio aviary in the back yard. I had a yellow pied that turned out to be a male. I've read quite a few posts here about raising the breeding boxes. I'm going to try that but any other suggestions would be appreciated. Kids really want some babies.