A charm of Finches is the main collective noun used to describe a group of these birds. Other collective nouns for Finches include a trembling, a trimming, and a chirm. The etymology of the collective noun a charm in relation to Finches is thought to come from the Old French word charme, meaning a song or a flock of birds. This is likely due to the fact that Finches are known for their melodious singing.
What Is a Group of Finches Called? – Finches Collective Nouns
