While it is possible to keep two cockatiels together, certain considerations must be made. They will need a larger than normal cage that allows for separate space, toys, and perches to prevent conflicts over territory. A long and gradual introduction process between the birds is important to assess compatibility. Constant supervision is needed to ensure neither shows stress signs like feather plucking or aggression. Only house pair-bonded or well-introduced cockatiels long-term with sufficient amenities and space for both to feel comfortable. With the right precautions and housing conditions, two tame cockatiels may coexist harmoniously when introduced and monitored correctly.