The male Green Rosella has a red frontal band; head and under parts are rich yellow, the latter sometimes washed with orange-red; cheek-patches are deep blue; feathers of the nape, back and wings are black margined with dark green; the rump olive green; the median wing-coverts greenish black; under wing-coverts and outer webs of flight feathers blue; central tail feathers are green marked with blue, lateral feathers pale blue tipped with white; wing stripe absent; bill horn coloured; iris brown; legs grey. The female Green Rosella is a smaller size with a smaller bill; throat generally washed with orange red; wing stripe usually absent. Green Rosellas occur in Tasmania and the larger islands in Bass Strait. Because of the somber colouration of their upperparts the Green Rosella is inconspicuous when on the ground seeking seeds or when in the tall eucalypts feeding on blossoms. Green Rosellas are noisy birds and this draws attention to their presence. The Green Rosella is not shy and will usually allow a close approach. The flight of the Green Rosella is strong with less undulation than that of the other rosellas. The diet of the Green Rosella comprises seeds, blossoms, berries, nuts, fruits and insects and their larvae. The call of the Green Rosella is a disyllabic “cussik-cussik” given regularly in flight; also a variety of flute like whistles. When alarmed the Green Rosella emits a rapid succession of shrill piping notes.
The male Green Rosella, when displaying, droops his wings, squares his shoulders, fluffs up his breast and upper tail-coverts and moves his fanned tail from side to side.
Text and information with permission from Joseph M. Forshaw author of Parrots of the World.