Moluccan Cockatoos are among the largest cockatoo species, and their enclosure needs reflect both their physical size and their intense psychological need for movement and stimulation. The absolute minimum cage size for a Moluccan is 36 inches wide by 24 inches deep by 48 inches tall, but these dimensions should be considered a baseline rather than a goal. A cage measuring 48 by 36 by 60 inches or larger is far more appropriate for a bird that may spend significant portions of the day inside its enclosure while owners are at work or away.
Beyond interior cage dimensions, Moluccans need substantial out-of-cage time in a bird-safe room or supervised area. Most avian behaviorists recommend a minimum of four to six hours of supervised free time daily for large cockatoos. The enclosure itself should be positioned in a social area of the home where the bird can observe household activity without being exposed to kitchen fumes, direct drafts, or excessive noise from televisions or speakers placed immediately adjacent.
Bar spacing is a critical safety factor for large cockatoos. Bars should be spaced between three-quarters of an inch and one inch apart — wide enough to prevent the bird from wedging its beak or toes, but narrow enough to prevent head entrapment. Bar gauge should be heavy, ideally 4 to 6 gauge steel, because Moluccans have exceptionally powerful beaks capable of bending or breaking lightweight cage wire over time.
The orientation of cage bars also matters. Horizontal bars on at least two sides of the enclosure allow the bird to climb, which is a natural and essential form of exercise for arboreal parrots. Cages with exclusively vertical bars limit climbing opportunities and force the bird to rely on perches and ladders for vertical movement, reducing overall physical activity.