Blue-crowned hanging parrot Blue-crowned hanging parrot The blue-crowned hanging parrot ("Loriculus galgulus") is a small (length: ) mainly green parrot found in forested lowlands in southern Burma and Thailand, Malaya, Singapore, and Indonesia (Sumatra, Java, Borneo). Blue-crowned hanging parrots are mostly green and the adults have black beaks. Adult males have a blue crown, red throat, red rump, and a yellow lower back. Adult females are duller than males and lack the yellow lower back, usually lack the red throat, and the blue crown is much less noticeable. The juvenile is duller than the female, and has a grey forehead and horn-coloured beak.
Budgerigar colour genetics from oranges, peaches, pinks to reds. When these feathers are exposed to a white light source, such as sunlight, only the blue part of the spectrum is reflected by the eumelanin granules. This reflected blue light passes through the yellow pigment layer, resulting in the green colouration known as "lightgreen" in only the budgerigar and/or "green" in any other naturally green coloured parrot species. The many colour variations of budgerigars, such as albino, blue, cinnamon, Clearwinged, the various Fallows, Grey, Greygreen, Greywing, Lutino, Mauve, Olive, Opaline, Spangled, Suffused and Violet are the result of mutations that have occurred within specific