Cockatiels can be taught to imitate human speech just like other parrots.
The easiest way to do this is by first removing unwanted distractions by
covering the bird’s cage. After that it’s just a matter of repetition;
repeating the same word or phrase the same way over and over. While there’s no
guarantee that your cockatiel will talk, it is generally agreed upon that this
is the best way to teach it how.
Summary
Cockatiels are generally long-lived and healthy pets. If well cared for your
pet cockatiel should provide you with many years of warm, amusing companionship.