russet sparrow; cinnamon sparrow
A small bird (Passer rutilans) found in East Asia. In Japanese, the name is usually written in katakana as ニュウナイスズメ.
The russet sparrow is a little smaller than the tree sparrow.
In spring, russet sparrows migrate here.
Standard katakana spelling for this bird name.
Kanji spelling is rare; the bird name is almost always written in kana.
The name ニュウナイスズメ literally means 'palace-entering sparrow'. The origin is uncertain, but it may refer to the bird's habit of nesting in buildings or its association with human settlements.