Grallina cyanoleuca, commonly known as the Magpie-lark or Peewee, is native to Australia. Its geographical distribution spans the mainland of Australia, including the entire continent except for very arid regions, as well as parts of Tasmania. The species is also found in some regions of southern New Guinea and the eastern Indonesian islands.

The Magpie-lark typically inhabits open environments with access to water. It is commonly found in urban areas, grasslands, farmlands, and open woodlands. This species thrives in areas where there are a mix of trees and open spaces, often near water bodies such as lakes, rivers, wetlands, and ponds.

Grallina cyanoleuca is well adapted to a variety of environments, showing a strong preference for habitats where it can forage easily on open ground. It feeds mainly on insects and small invertebrates, which it often collects from the surface of the ground in open spaces. The bird is also known for its nesting behavior, building mud nests often in the fork of tree branches or ledges. In urban areas, it may adapt to nesting on buildings and other structures.