Help for a first time budgies breeder?

I've just started breeding budgies and a need a bit of help to attain started. I have 2 pairs and several breeding boxes in an outdoor aviary. I was wondering how long it would lift for them to start breeding. the boxes have been in the aviary for nearly a week and the birds have been in the aviary for nearly 3 weeks. Is there anything I could buy to encorage them to breed? Any advice?
Why have my impersonator be losing her...
Answers:    You did the right thing by getting the breeding boxes. Another tip is to cover their cage at night, and only put one pair surrounded by a cage.
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