The phrase, "Birds of a feather flock together," implies that people who share traits tend to choose to accompany those who express similar traits. Proficiency in would be MOST helpful when attempting to understand this phrase.

Figurative Language.

Explanation:

It's figurative language because it's describing something with great imagery and metaphor.

the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj