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Cockatiels are picky when choosing a mate and form strong bonds that last for life. Breeding usually occurs following a heavy rain, when food will be plentiful for the chicks. During the rain, many of the birds will sit with their tails and wings outstretched to bathe.
Cockatiel lifespans in captivity are generally given as 15-20 years, though it is sometimes given as short as 12-15 years and there are anecdotes of cockatiels living as long as 30 years. Generally they can live to about 25 years if they are on a healthy diet and don't have any health issues.