Western Rosella

The Western Rosella is the smallest member of the rosella group and, unlike its relatives, shows a marked difference between the sexes. Males have a rich red head, breast, and belly, a green back, and a distinctive yellow cheek patch; females are duller overall, with more green mixed through the red and a paler, less defined cheek patch.

Geographically restricted to the far southwest corner of Australia, it is often split into two subspecies: a green-backed form in forested areas and a more yellow-tinged form in drier woodland further inland, sometimes called the Moyadong or inland form.

Key field marks

• Small size compared to other rosellas
• Red head, breast, and belly in males; duller, greener plumage in females
• Distinct yellow cheek patch (rather than white or blue)
• Green back and wings
• Sexual dimorphism unusual for rosellas, aiding identification

Similar species

• Eastern Rosella: larger, with white cheek patches and no range overlap (Western Rosella is confined to southwestern Australia).
• No other rosella species occurs within its restricted range, making misidentification unlikely locally.

Habitat

Western Rosellas occupy eucalypt forest and woodland, farmland with remnant trees, orchards, and rural gardens.

Range

This species is endemic to the southwestern corner of Western Australia, roughly from Perth south and east through the forested and wheatbelt regions.

Migration

Sedentary, with pairs typically remaining on the same territory year-round.

Behavior

Western Rosellas are usually seen alone, in pairs, or in small family groups, feeding quietly and often staying low to the ground or perched inconspicuously in foliage.

Voice

The calls are softer and less strident than those of other rosellas, including a mellow contact call and quiet chattering between paired birds.

Feeding

Diet consists of grass and tree seeds, fruits, blossoms, and some insects, foraging both on the ground and in vegetation.

Nesting and breeding

Nests in tree hollows, usually at lower heights than other rosellas, lined with wood dust. Clutches average four to seven white eggs, incubated by the female, with young fledging around five weeks after hatching.