The Malurus cyaneus, commonly known as the Superb Fairywren, is native to southeastern Australia, including the eastern part of South Australia, Victoria, New South Wales, Tasmania, and the Australian Capital Territory. Its range extends along the coastal regions and adjacent inland areas.

The Superb Fairywren inhabits a variety of environments ranging from temperate forests and woodlands to shrublands and grasslands. It is often found in habitats with dense undergrowth or ground cover, which provides protection and nesting sites. The climate in these areas is typically temperate with moderate rainfall, and the region experiences distinct seasonal changes.

The ecological niche of the Superb Fairywren includes its role as an insectivore, feeding primarily on insects and other small arthropods. It forages both on the ground and in low vegetation, often in family groups or small social units. This species plays a role in controlling insect populations and serves as prey for various predators, contributing to the ecological balance within its habitat.