A group of owls is called a parliament, one of the best-known and most-loved collective nouns in English. Unlike many collective nouns from the historic hunting tradition, this one didn’t originate in the 15th-century Book of Saint Albans — it’s a later literary coinage that leans on owls’ ancient reputation as symbols of wisdom, an association stretching back to ancient Greece and the owl of Athena. The name gained real popularity through C.S. Lewis’s Narnia books, where “Parliament of Owls” appears as a memorable chapter title.
Bonus fact: owls can’t move their eyes in their sockets, but they can rotate their heads up to about 270 degrees to compensate, thanks to extra vertebrae and a specialized blood-vessel structure that keeps blood flowing even at extreme angles.
Owls are also described as a stare (specifically for owls perched together) and occasionally a wisdom or bazaar on longer word lists — though since most owl species are solitary hunters, seeing any real-world “parliament” at all is a genuinely uncommon sight.
Related: Collective Nouns for Birds · What Is a Group of Owls Called? · What Animals Form a Parliament? · A Stare of Owls · A Wisdom of Owls · A Bazaar of Owls