Superb Fairywren

The Superb Fairywren is a small, long-tailed songbird well known for the dramatic seasonal transformation of breeding males, who develop a shimmering, iridescent blue crown, ear coverts, and mantle set against a black mask, throat, and upper breast, with a blue-black tail often cocked upright. Outside the breeding season, males molt into a plumage much like that of females: soft brown above, paler below, with a blue-washed tail.

Females and juveniles are brown overall year-round, with a distinctive rust-orange eye-ring and bill, and lack the male's black mask and blue crown. Fairywrens live in small, close-knit family groups and are famous among ornithologists for a complex cooperative breeding system and very high rates of extra-pair mating.

Key field marks

• Breeding male: brilliant iridescent blue crown, ear coverts, and back, with a black mask, throat, and breast band
• Non-breeding male/female: plain brown above, pale below, blue-tinged tail
• Female: rust-orange bill and eye-ring, no black mask
• Long tail frequently held cocked upright
• Small, rounded body with weak, whirring flight

Similar species

• Splendid Fairywren: breeding male is almost entirely blue (including throat and breast) rather than showing the black throat/mask of the Superb Fairywren; ranges overlap only marginally in inland South Australia.
• Variegated Fairywren: breeding male shows a chestnut shoulder patch absent in the Superb Fairywren.
• Female fairywren species are notoriously similar; range and any accompanying males are the best clues.

Habitat

Superb Fairywrens favor dense low shrubbery and understory in gardens, parks, woodland, forest edges, and heathland, needing thick cover for shelter and nesting.

Range

The species is common and widespread across southeastern Australia, including Tasmania, from southeastern Queensland through New South Wales, Victoria, and into southeastern South Australia.

Migration

Sedentary, with family groups defending the same territory year-round.

Behavior

Superb Fairywrens live in small social groups typically consisting of a dominant breeding pair and several helper birds, often offspring from previous broods, that assist in feeding and defending young. Groups forage together low in vegetation and on the ground, keeping in near-constant contact.

Voice

The song is a rapid, reeling, high-pitched trill, while contact calls include soft, buzzy "zit" notes used to keep the group together.

Feeding

Diet is dominated by small insects and spiders gleaned from foliage, bark, and the ground, supplemented occasionally by small seeds.

Nesting and breeding

Nests are small, domed structures built low in dense shrubs, made of grass and spider web. Clutches usually contain three to four pale eggs, incubated by the female, with the whole family group helping feed the chicks. The species is notable for extremely high rates of extra-pair paternity, with many broods sired by males from neighboring territories.