U+9CF0 "鳰" CJK Unified Ideograph-# Unicode Character

U+9CF0 "鳰" CJK Unified Ideograph-# is a rare East Asian character primarily used in Japanese, where it is known as a kokuji (a kanji invented in Japan) and pronounced "nio" or "kai" depending on context. Its meaning is "grebe" or "little grebe," a type of small water bird, and the character itself is a combination of the radical for "bird" (鳥) and the phonetic or conceptual element 入 (meaning "enter" or "dive"), reflecting the bird's behavior of diving into water. While it appears in some Chinese and Korean character sets, its usage is most common in Japanese ornithological and literary contexts.