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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.
Life Expectancy Their life expectancy during captivity has been found out to be up to 15 years, and even well up to 20 years. There has been a case where it was found to live up to 36 years. The life span is mainly based upon its well-being - physical and emotional. Cockatiels aren't the ones who'd live the life of a hermit - they like company. So it is best if you introduce it to another bird of the same kind. Two males get along well too. Sexual Dimorphism One cannot quite differentiate between a male and a female species, until they have their first molt when they're about six to nine months of age.