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 and cheese and brought the recipe back to Monticello. Jefferson drew a sketch of the pasta and wrote detailed notes on the extrusion process. In 1793, he commissioned American ambassador to Paris William Short to purchase a machine for making it. Evidently, the machine was not suitable, as Jefferson later imported both macaroni and Parmesan cheese for his use at Monticello. In 1802, Jefferson served "a pie called macaroni" at a state dinner. The menu of the dinner was reported by Reverend Manasseh Cutler, who apparently was not fond of the cheesy macaroni casserole. Nevertheless, since that time, baked macaroni and cheese