X – Exultation
An exultation of larks.
(This one is a bit of a cheat – we know exultation actually begins with an E, but we couldn't find any collective nouns that begin with an X. If you know of one, please let us know!)
To remember the collective noun for larks, use the following mnemonic:
The media said the crowd threw eggs to insult his nation (exultation), but really they did it for a lark.
Examples of exultation in a sentence:
The exultation of larks only need a small nest.
An exultation larks produce a unique song.
The rustling in the hedge turned out to be an exultation of larks.