Terms of Venery

Or nouns of assemblage. In other words, collective nouns.

I've heard of a murder of crows and an exultation of larks, but I'd never heard of a lute of mallards, a pitying of doves or a bazaar of guillemots.

I didn't know that geese come in wedges and nides, as well as gaggles, skeins (flying) and flocks. And I'd never come across a plump of geese (in water).

Owls come in parliaments and stares.
You may see a parliament, a clamour or a building of rooks.
Regrettably a gulp of swallows is spurious but a kettle of hawks,a richness of martens or a doading of sheldrakes may well be genuine.

I was quite taken with a knob of waterfowl and a ubiquity of sparrows!

Courtesy of Dictionary.com