a parliament of owls Subjectowl (owls)CategoryAnimals → BirdsConfidencehighAttestationwikipedia-cited, wiktionary-attested 4 sourcesWikipedia - List of animal namesZoological Society of San Diego - Animal group namesWiktionary - parliamentWiktionary - Appendix:English collective nouns
a parliament of rooks Subjectrook (rooks)CategoryAnimals → BirdsConfidencehighAttestationwikipedia-cited, wiktionary-attested 4 sourcesWikipedia - List of animal namesOxford Dictionaries - What do you call a group of ...?Wiktionary - parliamentWiktionary - Appendix:English collective nouns