I have 3 cockatiels in a large aviary. for themselves. Is it more dificult to train them than?

Yes I'd imagine it would be harder to train them in a larger cage as they'd be more inclined to fly away from you. You'd have more close contact with them if they were in a small cage. In general it's hard to train birds, so I 'waste your time getting a smaller or cage or anything, IF you have being rearing them since they were very young then you'll have a much better chance in training them.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.