The Rainbow Lorikeet is very colourful as its name suggests. Almost every colour of the rainbow is found on the feathers of the rainbow lorikeet. They are not large birds, with a Rainbow Lorikeets height ranging from 25-30 cm (9.8-11.8 in) in size, and with a wingspan of about 17 cm (6.7 in). They vary significantly in colouration between the numerous subspecies. Their eponymous markings of the best known subspecies T. h. moluccanus are particularly striking: A dark blue or violet-blue head and stomach, a bright green back, tail and vent, and an orange breast and beak. Several subspecies have darker scalloped markings across the orange or red breast and the Weber’s Lorikeet (T. h. weberi) is predominan green.
Rainbow Lorikeets feed mainly on pollen and nectar, and possess a tongue adapted especially for their particular diet. The end of the tongue is equipped with a papillate appendage adapted to collecting nectar from flowers. They are also frequent visitors at bird feeders that supply lorikeet-friendly treats, such as store-bought nectar, sunflower seeds, and fruits such as apples, grapes and pears
As with any parrot, ownership of lorikeets must not be taken lightly. Captive lorikeets have a long lifespan, often in excess of 20 years. Their diet makes them particularly messy; they are well-known in aviculture for their liquid droppings and energetic and playful nature.