Weegy: The average lifespan of a cockatiel is 12 to 15 years. [ It is not unusual for a cockatiel to live to 20 years of age and the occasional cockatiel makes it to 30!
To insure your cockatiel has a long and happy life provide:
a clean cage
daily exercise
a healthy diet including fresh fruit and vegetables offered daily
plenty of activity and companionship ]
(More)