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A wet Rainbow Lorikeet selects seeds at a bird feeder. Caught in heavy rain the feathers changes colour because of the differences in colour types- either pigment-related or structure-related. In this lorikeet the colour of predominantly green feathers, such as on the wings and back, comes mainly from the micro-structure of the feather barbules that interfere with light wavelengths changing one colour to another; When molecules of water in the rain fill in the micro-structures of the barbules the appearance of the green colour alters to brown. Pigment-based colours are not affected, unless they have both pigmented and structural attributes. When dry this bird will return to its normal gaudy plumage.  // Rainbow Lorikeet - Psittacidae: Trichoglossus haematodus. Length to 30cm; wingspan to 45cm; weight to 150g; Found in northern and eastern Australia from the Kimberley Region in northern Western Australia (Red-collared Lorikeet) to eastern South Australia. Occurs in forests, woodlands, heath, and rural and urban areas. Aviary-escapees are established in many towns and cities. Widespread with many subpsecies - often with a different name - from eastern Indonesia through New Guinea east to Vanuatu and New Caledonia, north to the Manus and the Admiralty Islands in Papua New Guinea (and possibly the Philippine Islands - may be a separate species. The taxonomy of the group is not yet finalised.)