"Today we say goodbye to this great blue bird," he said. Later the tweet was shared by Jack Dorsey, Twitter's best-known co-founder with a goat emoji, which means 'greatest of all time'.

Elon Musk's rebranding of Twitter to X is a step toward creating a super-app he's dreamt of – but ditching the iconic blue bird emoji could prove a risky move for the company, according to ...