Archaic name for the little grebe (Tachybaptus ruficollis). In modern Japanese, this bird is almost always called カイツブリ. The kanji 鳰 is a kokuji (Japanese-made character) and is rarely used today.
See also: カイツブリ
In old documents, the little grebe is written as 鳰.
Archaic kanji for the little grebe; the bird is now normally written in kana as カイツブリ.
Katakana spelling of the archaic name; modern usage prefers カイツブリ.
Hiragana spelling of the archaic name; modern usage prefers カイツブリ.
The kanji 鳰 is a kokuji (Japanese-made character) combining 鳥 (bird) and 入 (enter), possibly referring to the bird's diving behavior. The reading にお is of uncertain origin.