Why does bob Ewell represent a bluejay?

Bob Ewell is likened to a bluejay in "To Kill a Mockingbird" because both are considered as untrustworthy and aggressive characters. Bluejays are known for their loud and aggressive behavior, just like Bob Ewell who falsely accuses Tom Robinson of the crime he himself committed. Furthermore, bluejays are often seen as pests, reflecting Bob Ewell's disruptive and harmful presence in the community.