There is a black sheep in every flock?

Yes, "There is a black sheep in every flock" is an idiom or a proverb that means that in every group or community there is someone who is different or unconventional. The black sheep is often seen as the odd one out, the person who does not conform to the norms or expectations of the group.

The idiom is often used in a negative sense to describe someone who is causing problems or trouble within a group. However, it can also be used in a more positive sense to describe someone who is unique and individualistic.