Rosellas are in a genus that consists of six species and nineteen subspecies. . These colourful parrots from Australia are in the genus Platycercus. . Platycercus means "broad-tailed" or "flat-tailed", reflecting a feature common to the rosellas and other members of the broad-tailed parrot tribe. Their diet is mainly seeds and fruit. Taxonomy. The genus was described by naturalist Nicholas Aylward Vigors in 1825; the name Platycercus derived from the Greek platykerkos meaning "broad-" or "flat-tailed", from platys "broad, wide, level, flat" and kerkos "tail of a beast".
https://en.wikipedia.org/wiki/Rosella