The morphology of the rainbow lorikeet is a reflection of its name: its body is a symphony of colours, although its back, wings and tail are green. The colouring of its head, nape and chest is what determines which sub-species it is from (up to 22 types have been counted). Its body is strong and its tail is pointed. In terms of its beak, in younger rainbow lorikeets it is dark brown, whilst adults' beaks will have turned orange or red. In flight it opens its wings, with bright and striking colours, at the same time as it screeches; when it is eating, however, it is silent and discrete (its feathers allow it to be disguised in the vegetation). Apparently, there is no sexual dimorphism.
In general, rainbow lorikeets group together in large flocks. As a sign of their sociable nature, forming mixed groups with other species is one of their characteristics. They can be found, above all, in Australia and South East Asia.
A rainbow lorikeet's diet is mainly based on nectar, ripened fruits, flowers and insects; soft food with a high nutritional intake of protein and vitamins. The adaptation to this type of diet can be seen in the shape of their tongue, which is equipped with a papillate appendage, prepared for gathering nectar from flowers. It uses its beak to squash the flesh of the fruit and extract the juice and seeds.
When the time for reproduction arrives, both males and females work to prepare the nest, whether it be in gaps between rotted wood or in the outer branches of eucalyptus trees. The female rainbow lorikeet is the one to hatch the eggs, although when it comes to feeding the young they once again work together with the male of the species. The parents are responsible for feeding the offspring, which are born after an incubation period of approximately 27 days. The laying of eggs occurs at intervals of one or two days and with three or four eggs each time. Baby rainbow lorikeets leave the nest after eight weeks.