Macaroni penguin been considered separate species, but the close similarities of their DNA sequences has led some, such as the Australian ornithologists Les Christidis and Walter Boles, to treat the royal as a subspecies of the macaroni. The two species are very similar in appearance; the royal penguin has a white face instead of the usually black face of the macaroni. Interbreeding with the Indo-Pacific subspecies of the southern rockhopper penguin ("E. chrysocome filholi") has been reported at Heard and Marion Islands, with three hybrids recorded there by a 1987–88 Australian National Antarctic Research Expedition. The macaroni penguin is a large, crested
Macaroni Cury" which records the earliest recipe for macaroni cheese. The word later came to be applied to overdressed dandies and was associated with foppish Italian fashions of dress and periwigs, as in the eighteenth-century British song "Yankee Doodle". The Russian language borrowed the word (as ) as a generic term for all varieties of pasta; this also holds for several other Slavic languages, as well as for Turkish, Greek, and Brazilian Portuguese. In Iran, all sorts of pasta are collectively called "makaroni". As is the case with dishes made with other types of pasta, macaroni and cheese is a popular