What is the collective noun for a group of goldfinches, and what is its suspected origin?

Answer

A Charm, thought to derive from the Old English word 'cirm' describing their song

The collective noun for goldfinches is a charm, which is believed to originate from the Old English word 'cirm,' used to describe the twittering sound of their song.

What is the collective noun for a group of goldfinches, and what is its suspected origin?
birdanimalwildlifefeatherfinch