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Rainbow lorikeet

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The rainbow lorikeet, known scientifically as Trichoglossus moluccanus, is a medium-sized parrot native to Australia.

Rainbow lorikeet (Trichoglossus moluccanus moluccanus) Sydney 2
Rainbow lorikeet (Trichoglossus moluccanus moluccanus) Sydney 2

These birds are widespread and very common along the eastern seaboard. Their range extends from northern Queensland down to South Australia. They thrive in diverse habitats, including rainforests, coastal bush, and woodland areas. Because they are so successful, BirdLife International considers them a species of least concern. In fact, an annual census by BirdLife Australia suggests they are the most commonly observed bird in the country.

These parrots are defined by their incredibly bright and colorful plumage. The head is a deep blue color, which is paired with a greenish-yellow nuchal collar. This collar sits around the back of the neck. The wings, back, and tail are primarily green. Their chest displays orange or yellow tones, while the belly is a deep blue. The thighs and rump are green.

Trichoglossus moluccanus with open wings, Brisbane
Trichoglossus moluccanus with open wings, Brisbane

During flight, a yellow wing-bar provides a sharp contrast against the red underwing coverts. Interestingly, there is little visual difference between males and females. To determine the sex, experts must use DNA analysis of a feather or surgical sexing by a veterinarian.

To survive on their specific diet, rainbow lorikeets have evolved unique physical tools. They feed mainly on nectar, pollen, and fruit. Their tongue is highly specialized for this task. The end of the tongue features a papillate appendage, which is a small structure used to gather nectar and pollen from flowers.

Scaly-breasted Lorikeet, New South Wales, AU imported from iNaturalist photo 350109099
Scaly-breasted Lorikeet, New South Wales, AU imported from iNaturalist photo 350109099

In Australia, nectar from eucalyptus is a vital food source. They also rely on plants like Grevillea, Pittosporum, and the sago palm. In Melanesia, they play a major role as pollinators for coconuts. They also consume various fruits, including mangoes, papayas, and figs.

The history of the rainbow lorikeet involves several important naturalists. The German naturalist Johann Friedrich Gmelin formally listed the species in 1788. He originally used the name Psittacus moluccanus. Gmelin was actually mistaken about their origin. He believed the specimens came from the Moluccas. Because of this error, he used the name "moluccanus." Later, in 1916, Gregory Mathews changed the type locality to Botany Bay in Australia. The genus name, Trichoglossus, was introduced in 1826 by the English naturalist James Francis Stephens.

Taxonomy, or the science of naming and classifying living things, has changed for this bird. Historically, six different groups were listed as subspecies of the rainbow lorikeet. However, many of these are now treated as separate species. For example, a 1997 review recommended splitting the scarlet-breasted, marigold, and Flores lorikeets into their own species. In 2019, the rainbow lorikeet was further split into three distinct groups: the rainbow, the coconut, and the red-collared lorikeets. Currently, only two subspecies are widely recognized: T. m. septentrionalis and T. m. moluccanus.

Reproduction for the rainbow lorikeet is a structured process. They are mostly monogamous, meaning they form pairs that often stay together for life.

Rainbow lorikeets (Trichoglossus moluccanus) mating at Peel Zoo, September 2020 01
Rainbow lorikeets (Trichoglossus moluccanus) mating at Peel Zoo, September 2020 01

Breeding times vary by region based on climate and food. In southern Australia, breeding usually happens between August and January. Nesting sites can be found in tall eucalypt hollows, palm trunks, or even overhanging rocks.

A female lays a clutch of one to three eggs. She alone handles the incubation, which lasts about 25 days.

While they are beautiful, rainbow lorikeets can sometimes be considered pests. In Western Australia, they were accidentally released in the 1960s. They now compete with native birds like the Carnaby's black cockatoo for food and nesting hollows. In New Zealand, a feral population was established in Auckland during the 1990s. This led to eradication efforts starting in 2000 to protect native honeyeaters. In many urban areas, they are also noted for creating noisy environments and leaving droppings on vehicles. They can also impact orchards by stripping fruit from trees.

Health issues also affect these populations. A condition called lorikeet paralysis syndrome occurs every year in parts of Australia. This syndrome causes thousands of birds to become unable to fly or eat. It is highly seasonal, occurring mostly between October and June. Scientists believe this may be caused by plant poisoning. This is because the symptoms peak during the summer months when certain plants bloom. Understanding these patterns helps researchers learn more about how the birds interact with their environment.

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🖼️ Images & Media (6)
File:Rainbow lorikeet (Trichoglossus moluccanus moluccanus) Sydney 2.jpg
Rainbow lorikeet (Trichoglossus...
File:Trichoglossus moluccanus with open wings, Brisbane.jpg
Trichoglossus moluccanus with open wings,...
File:Scaly-breasted Lorikeet, New South Wales, AU imported from iNaturalist photo 350109099.jpg
Scaly-breasted Lorikeet, New South Wales,...
File:Rainbow lorikeets (Trichoglossus moluccanus) mating at Peel Zoo, September 2020 01.jpg
Rainbow lorikeets (Trichoglossus...
File:Rainbow lorikeet in arboreal termite nest7th Brigade Park Chermside P1270780.jpg
Rainbow lorikeet in arboreal termite...
File:Trichoglossus moluccanus, flowering Xanthorrhoea.jpg
Trichoglossus moluccanus, flowering...
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