Few birds wear their mood as openly as a sulphur-crested cockatoo. In good health she is engaged and theatrical: crest rising when something interests her, eyes pinning slightly with excitement, body loose and upright as she leans toward the people she knows. That expressiveness is your baseline — learn her normal range of crest positions, calls and clowning so that flatness and silence register as the warning signs they are.
White Feathers, Crest and Powder Down
Healthy plumage is brilliant white and smooth, with the lemon wash under the wings and tail visible when she stretches. This species produces powder down, so a fine white dust on your hand after handling is normal, but bare patches, chewed feather shafts or plucking along the chest and legs are not. The crest feathers should be complete and raise as one clean fan. Check that the nostrils are clear, the eyes bright without swelling, and the large black beak evenly shaped — a beak that overgrows quickly or flakes deeply needs veterinary input.
Eating, Droppings and Body Condition
A healthy cockatoo eats assertively, holding food in one foot, working through vegetables and pellets and stripping bark or branches for occupation. Droppings should show a formed green portion with white urates, varying somewhat with how much fresh food she has eaten. Feel the keel bone beneath the breast feathers during handling: you want muscle on either side of a bone you can find but not a sharp ridge. Regular perch-scale weights catch drift in either direction in a species prone to gaining on a seed-heavy routine.
Voice, Company and Play
Sound is a health sign here. A cockatoo who calls at dawn and dusk, answers her people, dances, bobs and destroys chew toys is showing normal social energy. So is demanding attention — that is the species, not a symptom. Concern belongs with the opposite shift: a bird who sits fluffed with crest flat, stops vocalising, refuses favourite foods or sleeps through the household's busy hours.
Feet, Grip and Getting Around
Watch how a cockatoo uses her feet, because this species handles food, toys and climbing with a dexterity that fades early when something is wrong. A healthy bird holds a piece of food up in one foot while standing securely on the other, climbs cage bars beak-over-foot without slipping, and grips an offered perch with even pressure from both feet. Favouring one foot, sitting low on a flat surface instead of perching, dropping held food repeatedly or developing sores on the soles all deserve attention. Check the undersides of the feet during handling: smooth, intact skin is what you want, and persistent redness or swelling on a bird who spends long hours on a single hard perch is a husbandry problem to fix alongside any vet visit.
When the Picture Changes
Book an avian vet promptly for breathing noise, tail-bobbing, nasal discharge, persistent loose droppings, any feather-damaging behaviour that is new, or appetite loss beyond a day. Bring recent weights and be honest about diet and out-of-cage time, since both shape this species' health. Storing that history in KinsLe's Pet Passport lets every vet who meets your cockatoo see her weights, diet notes and past findings gathered into one portable record.