コバタン Cacatua sulphurea

A medium-sized white cockatoo with a yellow crest; rare and endangered throughout its native range but has several strong naturalized populations across Asia. Raucous and social, usually seen in large flocks flying noisily over forested areas. Noticeably smaller than the similarly-colored Sulphur-crested Cockatoo; no natural range overlap, but the two coexist in parts of their introduced range, such as Singapore.