What Is This ‘Bird Theory’ Trend Going Viral on TikTok?

The "Bird Theory" Trend on TikTok

A new trend is taking over TikTok, where users tell their partners they saw a bird and record their reaction.

Thousands of users are participating in the "Bird Theory" trend, but ironically, it has nothing to do with birds.

The viral TikTok trend is all about testing your relationship by using a scientific method known as the "Bid Test" to gauge your partner's engagement.

The trend is a way for couples to test their relationship, and it's not about birds at all, but about the partner's reaction to the statement.

Author's summary: TikTok's "Bird Theory" trend tests relationships.

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Mental Floss Mental Floss — 2025-10-29

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