From a Washington Post story by Joseph Menn and Marianna Sotomayor headlined “Twitter will lose bird logo in brand overhaul, Elon Musk says”:

Twitter owner Elon Musk said that his social media platform will retire its widely recognized blue bird logo, and eventually the Twitter name, as part of his relentless effort to overhaul the company.

Amid tweets asking users whether the brand should change its default color from blue to black or white, Musk added: “Soon we shall bid adieu to the twitter brand and, gradually, all the birds.”