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

The "Bird Theory" Trend on TikTok

A new trend is taking over TikTok, with thousands of users participating in the "Bird Theory" challenge. The trend involves telling a partner that you saw a bird and recording their reaction.

The purpose of this challenge is not about birds, but rather about testing relationships using a method known as the "Bid Test" to gauge a partner's engagement.

The "Bird Theory" videos have nothing to do with bird videos or aren't even about birds at all.

Couples are using this trend to assess their partner's interest and attention. Author's summary: TikTok's "Bird Theory" trend tests relationships.

more

Mental Floss Mental Floss — 2025-10-29