The sound comes from Twitter, the social platform built around short posts, where notification alerts told users about new mentions, replies, likes and direct messages. Because the chirp is tied to a bird-themed service, its light, tweet-like tone became easy to recognise even outside the app. As short-form video and meme editing grew, creators lifted the alert as a standalone effect and began placing it over screenshots and phone mockups. It remains popular because audiences read it instantly as social media news arriving, without needing any caption or explanation.