Please if anyone knows more about zebra finches it's me, the people at the pet sore said that they had only female albino zebra finches because they didn't have male coloration even though they aren't even feather sexable! They said a completely seed diet is all every type of bird needs, but in reality they need a varieted diet depending on the spieces. I've thought this out perfectly and they have all the aspects needed for survival in my area. The only predators they would face is the little owls and kestrels, but seeing as they are so fast and the budgies can't ever catch them I think they'd be fine. These guys are foragers and they eat mostly on the ground. That's why I can't grows plants in the aviary, these guys eat every seedling they see! The are also super cold hardy! I think ad long as I release them in small groups they will be fine. They also are very protective of their nests and they tend to make their nest connected together so a predator will have a harder time. Imagine a kestrel vs 3-5 pairs of super territorial parents. The kestrel would freak out and I don't think they will get kicked out of their nest. Also they are super picky when making nests so them taking another birds nest is highly unlikely.
Edit: I'm kinda stupid


 I read that wrong. Also I could ask, but a good pet store would never as they don't know if the birds could get their other birds sick.