Proper social introductions between cockatiels take diligent supervision and time. Housing birds in adjacent cages allow gradual adjustment to each other's presence without risk of harm. Daily supervised flight periods, with plenty of space between perches and toys, build comfort and trust slowly. Parallel introductions work best with the same or similar aged birds minimizing territorial disputes. Monitoring for signs of stress like feather fluffing ensures introductions progress at each cockatiel's comfort level. Full-time integration takes 4-6 weeks on average. With this steady approach most tame, healthy cockatiels accept new cage mates peacefully once ready. Patient handling of the introduction process yields long-term flock harmony.