The main collective noun for Falcons is a cast, with other collective nouns including a soar, a tower, a bazaar, a brood, a flight, an eyrie, a nest, a pair, a ringing up, a stooping, and an eyass. The term ‘cast’ refers to the act of a falconer releasing a falcon into the air. This term was then adopted to refer to a group of falcons, as it was seen as a representation of the birds being released into the air.
What Is a Group of Falcons Called? – Falcons Collective Nouns
