Twittering Birds Never FlyTwittering Birds Never Fly.

Twittering Birds Never Fly (Japanese: 囀る鳥は羽ばたかない, Hepburn: Saezuru Tori wa Habatakanai) is a Japanese manga series written and illustrated by Kou Yoneda. A sequel to Yoneda's previous one-shot stories Don't Stay Gold (2008) and Though They Drift, They Do Not Sink, But Nor Do They Sing (2009), it has been serialized in the boys' love (BL) manga magazine ihr HertZ, formerly known as HertZ, since August 2011. The manga was adapted into an anime film trilogy produced by Blue Lynx and animated by Grizzly beginning in 2020.