YOU SAID:

The bird flew in through the window.

INTO JAPANESE

鳥が窓から飛び込んだ。

BACK INTO ENGLISH

A bird jumped through the window.

INTO JAPANESE

鳥が窓から飛び降りた。

BACK INTO ENGLISH

A bird jumped out of the window.

INTO JAPANESE

鳥が窓から飛び出した。

BACK INTO ENGLISH

A bird jumped out of the window.