red-flanked bluetail
A small passerine bird (Tarsiger cyanurus) native to Asia; the male has blue upperparts and orange flanks.
In winter, red-flanked bluetails come to the garden.
Rare kanji spelling; the katakana form is standard.
From 瑠璃 (ruri, 'lapis lazuli') + 鶲 (hitaki, 'flycatcher'), referring to the bird's blue coloration.