I hadnt put any nest box's in there as I didn't want to 'force' them to breed as such.
If they happen to use the log to nest in, I will take it out after the first lot have hatched.
I should also probably mention that the only couple to have paired up are my original 2 birds, so hopefully she will be the only one to become pregnant.
The only thing I was worried about was having gravel in the bottom like I have, but it seems like the easiest substrate to clean so unless gravel is a no-no im going to leave as-is.
Another thing I have in the makings is a solar powered computer fan to keep them getting too hot during Adelaide's summer (when it comes back around). 120mm fan will be powered by a 12w 4.5v solar panel producing a slight breeze for the birds to cool themselves.
Ill post a DIY thread when I make it if anyone else is interested in doing something similar. (if i get good enough results, im going to look into making a solar powered water pump to keep their water bowl from going stagnant too)