(CNN) — Twit-t-who? The green owl who was the logo of language-learning app Duolingo is no longer. The US company behind the app, which became a household name during the Covid-19 pandemic ...

It started Tuesday when the language-learning app Duolingo posted that Duo the Owl, its internet-famous big green bird, was dead. “It is with heavy hearts that we inform you that Duo ...

The original Duolingo logo featured a 2-D owl whose eyes and mouth spelled out "DUO." A year later, the first 3-D version of Duo was released with a realistic owl body and two wide eyes that ...