The Genus Melopsittacus is a scientific classification for the parakeet species commonly known as the budgerigar. Synonyms to the term Genus Melopsittacus include the scientific name Psittacus undulatus, which is an older classification for the same species. Other synonyms may include the common name budgie or English parakeet. The budgerigar is a small, colorful bird that is native to Australia and is commonly kept as a pet around the world. Being a beloved bird species, it has acquired numerous nicknames and monikers, such as shell parakeet, warbling grass parakeet, and pet parrot.