Rosella

Eastern Rosella
Golden-mantled Rosella, Cecilia's Rosella
Family: PsittacidaePlatycercus eximius cecilaePhoto Courtesy Andy Sennett
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The Green Rosella Platycercus caledonicus is a colorful parrot that can be found in Tasmania and the larger islands in Bass Strait.
Description: ...

Golden-Mantled Rosella Species Profile
Traits: One of the most popular species of rosella, the golden-mantled rosella is gentle and affectionate.

Rosella, Northern Platycercus venustus Found: Australia
Photographed by: 1) Susan Flashman
Rosella, Western Platycercus icterotis Found: Australia
Photographed by: Stephan Barnett ...

Crimson Rosellas also feed here.
There is also a board walk known as O'Reilly's Treetop Walk open to all. Hordes of people use it even early in the morning.

Eastern Rosella & Crimson Rosella Illustration
Eastern Sawshark, Pristiophorus sp. A
Eastern Sea Garfish, Hyporhamphus australis
Eastern Sea Garfish, Hyporhamphus australis (Steindachner, 1866) ...

There was also competition for nest hollows with feral honey bees and introduced Crimson Rosellas.[5] By 1986 the population had been reduced to a single female bird, named "Miamiti" after a matriarch of the Norfolk Island people.

Usually because the winters are too cold (like to the Rosella), or because there's not enough food around in winter, like for the Peafowl.

My thoughts in this regard were sort of legitimised when it was pointed out by the Museum, the Budgerigar ,Rosella and Night Parrot all have common ancestors. DNA testing has apparently validated this.

Tribe Platycercini: 18 species in 8 genera, including the rosellas.
Tribe Melopsittacini: one genus with one species, the Budgerigar.
Tribe Neophemini: two small genera of parrots.

The Parrot group also includes cockatoos, Lorikeets, Rosellas, parakeets, macaws and lovebirds.

These birds are usually seen with other parrots such as the Pale-headed Rosella and the Mallee Ringneck Parrot. The Red-winged Parrot usually forms flocks of 15-20 during the non-breeding season.

Tropican is so nutritionally advanced that there's no need for dietary supplements. It is formulated for companion birds such as parrots, amazons, cockatoos, macaws, cockatiels, lovebirds, conures, rosellas, and most other pet birds.

The ancestor of both genera appears to have come from Australia, possibly from stock that also have rise to the rosellas, at least 20 million years ago.

See also: Parrot, Cockatoo, Parakeet, Crimson rosella, Perch