Pica is a term used to describe a type of eating disorder in which a person compulsively eats non-food items such as dirt, chalk, or paper. It is also the name of a genus of birds in the Corvidae family, commonly known as magpies. Magpies are known for their intelligence and curiosity, and are found in many parts of the world. They are easily recognizable by their black and white plumage and long tail feathers.