Asian house martin
A small migratory bird of the swallow family, nesting on cliffs and buildings in East Asia.
Asian house martins migrate to Japan in spring.
Katakana spelling is common for this bird name; usually written in kana.
Kanji spelling is rare and may not be widely recognized; the katakana form is preferred.
Compound of 岩 (iwa, 'rock') + ツバメ (tsubame, 'swallow'), referring to its cliff-nesting habit.