Mavis is a term used to describe a type of bird, specifically a THRUSH. It is a small- to medium-sized songbird that is found in many parts of the world. The most common species of Mavis is the European Blackbird, which is a member of the Turdidae family. Other species of Mavis include the American Robin, the Gray-cheeked THRUSH, and the Wood THRUSH. All of these birds are known for their melodious songs and beautiful plumage.