How do cockatiels get around mostly?

Since a cockatiel's (hands) are behind it's back the cockatiel uses it's feet to wobble around perches and ect. Cockatiels can also use their wings for balance if they are about to lean or fall. It's like if you are walking on something skinny such as a rope or a skinny piece of ceament and you put your hands out by your sides to keep your balance, well the cockatiel does the same thing!