Macaroni penguin female are similar in appearance; males tend to be slightly larger. Males also bear relatively larger bills, which average around compared to in females; this feature has been used to tell the sexes apart. Immature birds are distinguished by their smaller size, smaller, duller-brown bill, dark grey chin and throat, and absent or underdeveloped head plumes, often just a scattering of yellow feathers. The crest is fully developed in birds aged three to four years, a year or two before breeding age. Macaroni penguins moult once a year, a process in which they replace all of their old feathers. They
Macaroni casserole The Swedish version is usually made with ham, leek, and cheese. In Malta, a baked dish called "imqarrun" is made with macaroni, bolognese style meat sauce and egg. Other versions add chicken livers, hard boiled eggs, peas and bacon. The macaroni is usually topped with a layer of grated cheese or besciamella (béchamel) that will melt during the baking process and help to bind and set the pasta. In Indonesia, the dish is sometimes known as "macaroni schotel". This dish was introduced by the Dutch during the occupation in Indonesia. Therefore, 'Schotel' or 'schaal' (meaning 'dish'), borrowed from Dutch language,