I don't have any tailless ones, but I've heard it has no effect on breeding. 3 should fit pretty well in the cage, but no more.
:If i bought a female crested that has no tail, would it affect her breeding? I dont think it will, but i just want to make sure. Also, how many cresteds could i put in a cage that is 3ft tall by 1ft by 1ft. I was thinking 3 max. Anyone disagree? Thanks