A group of owls is called a parliament.
Why it is true
This collective term reflects the wisdom traditionally associated with these nocturnal birds, which often gather in groups during the day to rest.
Source: Ornithology
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.