Odd request

[425nm]

Originally Posted by Aquattro

And they can annoy the neighbors 5 houses away!

That depends entirely on how well you train them. Its like saying all dogs will bite you or bark incessantly.
Birds train just as easily as dogs. Just like dogs some species vary in how noisey they are (ie. Sun conures are known for being loud) but if you're diligent in your training most if not all will respond to it. Plus I don't think most conures can yell loud enough to be heard outside a house. A big Macaw or Cockatoo on the other hand probably can.
Birds rarely make noise once you put them to bed (sheet over cage) as well. Birds that make noise at night time become snacks in the wild. Captivity hasn't managed to breed that out of them yet.