アマツバメ
a small, fast-flying insectivorous bird with long, narrow wings and a forked tail, typically dark in plumage
:
• A swift darted across the evening sky.
アマツバメが夕暮れの空を横切って飛んだ。
• The old church tower is a nesting site for swifts.
古い教会の塔はアマツバメの営巣地だ。
