I take him everywhere within reason, including the local Video Store, MacDonalds, Seven-Eleven. He expectally likes to go the the pet shop to visit other cockatiel friends.
He can fly a couple of meters, though I do keep at least one of his wings, clipped. Particulary after he flew off once. I got him back a week later from a house 3 Kilometers away! Outside he is wary of other birds, but knows his best defence is to snuggle in close to my head.
His original name was "Teak", but a little girl at a friends place who looked after him, renamed him to "Teaky-boy". He doesn't speak, but whistles and "tic-tics" a lot, particularly to strangers.
He is however very particular about who and how they try to scratches him. A lot of people present to him a finger for him to climb on, but he just thinks they want a play fight, and will gladly oblige. To get him to climb up I always presented him a flat hand, plam down.
If you browser is capable, you can look at this AVI movie or Teaky boy on my shoulder. Yes I know it is not very good.
For more above Cockatiels see Native Cockatiel Society of Australia.