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.
Yellow-tailed black cockatoo is a more solid brown-black in the eastern subspecies, while the southern race has more pronounced yellow scalloping on the underparts. The male yellow-tailed black cockatoo has a black bill, a dull yellow patch behind each eye, and pinkish or reddish eye-rings. The female has grey eye-rings, a horn-coloured bill, and brighter and more clearly defined yellow cheek-patches. Immature birds have duller plumage overall, a horn-coloured bill, and grey eye-rings; The upper beak of the immature male darkens to black by two years of age, commencing at the base of the bill and spreading over ten weeks. The lower beak