The Eclectus parrot is the most sexually dimorphic of the parrots. That means that the males and the females are very different, so different that at one time they were thought to be separate species. Males are mostly bright emerald green, and females are mostly bright red and purple/blue.
The Red-sided Eclectus is one of the 9 subspecies and originates from New Guinea. It is probably the most common eclectus kept as a pet in the US.