The Willie Wagtail is the largest, and most well-known, of the Australian fantails. The plumage is black above with a white belly. The Willie Wagtail can be distinguished from other similar-sized black and white birds by its black throat and white eyebrows and whisker marks. The name wagtail stems from the constant sideways wagging of the tail.
Willie Wagtails are found in most open habitats, especially open forests and woodlands, tending to be absent from wet sclerophyll forests and rainforests. They are often associated with water-courses and wetlands and are common around human habitation.