いつの間にか小鳥たちは見えなくなった。

Sentence Analyzer

いつの間にか 小鳥たち 見えなく なった

English Translation

Before I knew it, I couldn't see the birds.

Furigana

いつの()にか小鳥(ことり)たちは()えなくなった。

Romanji

Itsunomanika kotoritachi wa mienaku natta.

Words

いつの間にか (いつのまにか)
before one knows; before one becomes aware of; unnoticed; unawares
()
topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
見える (まみえる)
to have an audience; to meet; to see; to face (an enemy); to confront; to serve (esp. as one's wife)
成る (なる)
to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...

Kanji

Readings: カン、 ケン、 あいだ、 ま、 あい
Meanings: interval, space
Readings: ショウ、 ちい.さい、 こ-、 お-、 さ-
Meanings: little, small
Readings: チョウ、 とり
Meanings: bird, chicken
Readings: ケン、 み.る、 み.える、 み.せる
Meanings: see, hopes, chances, idea, opinion, look at, visible