The Budgerigar (Melopsittacus undulatus), (parakeet, shell parakeet, budgerigah, budgie, or common pet parakeet in US English) is a small parrot and the only species in the Australian genus Melopsittacus. A small long-tailed predominantly green and yellow bird with black scalloped markings on the wings and shoulders in the wild, the Budgerigar has been bred extensively with a profusion of colour forms resulting. Thus, aviary birds may be blue and white, all yellow, all white, or various other combinations thereof. Some have even been bred with small crests. In the wild, it is a predominantly seed-eating species. The budgerigar is found throughout the drier parts of Australia and has survived for the last five million years in the harsh inland conditions of that continent.