They are now in the outdoor aviary, and have built already two nests. For the building they are ruining nests of my other birds, although I have enough material for them!
I suspect them also for attacking my crimsonwing male

Does anyone recognise this behaviour?
I am thinking of selling them, it's not funny anymore, my crimsonwing is really harmed.

I'm really curious someone has the same experiences, or can help me what to do now