The head and entire under parts of the Western Rosella is red; yellow cheek patches; feathers of back and wings black broadly margined with dark green; rump green, occasionally marked with red; median wing-coverts black; under wing-coverts and outer webs of flight feathers blue; central tail feathers green tinged with blue, lateral feathers pale blue tipped with white; bill grey; iris dark brown; legs brownish grey. The Western Rosella inhabits south-western Australia. In open forest trees surrounding croplands or lining roadways, timber bordering watercourses, grasslands and cultivated farmlands. The Western Rosella is a confiding bird and becomes very tame around farm buildings where feeding on spilled grain. The buoyant, fluttering flight of the Western Rosella differs markedly from the heavy flight of other rosellas. Between wing beats there are only very brief periods of gliding. The Western Rosella feeds on seeds of grasses and herbaceous plants, fruits, berries and insects and their larvae. The call of the Western Rosella is soft and melodious, comprising a series of whistle like notes repeated rapidly, and it lacks the harsh, metallic tones common to the calls of other rosellas.
The breeding season of the Western Rosella extends from August through to December. Only the female Western Rosella broods and while she is sitting, the male remains in the immediate vicinity of the nest.
Text and information with permission from Joseph M. Forshaw author of Parrots of the World.