I'm not sure if they were parent raised, I'm hoping they were. They were in a large cage where there were 6 youngish pairs, some of which were already breeding and some weren't. We picked this pair based on their physical condition and according to the breeder they haven't breed yet. The birds had already paired off and they were a pair.
I also picked up a breeding box from them along with a whole heap of other things including a Book on Conures (which I paid almost double the price!).
There aggression is 100% natural, they are afraid and if you hold catch them and try to hold them, they will bite! I have special light leather gloves that I used and it still hurts like hell when they bite but they can't break skin. I would say is purely fear and that's all.
In all honesty based on their reaction when I put my hand in the cage, they are frighten and just try to get away. I know Jazz our Cockatiel would stand his ground and hiss at me with his wings out.
I'M ALL EXCITED . . The cage has been delivered!! Time to get the tools out
I've switched on the IP Cam so I can keep an eye on the conures while my son and I put together the cage
Cheers
Paul