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 pie Macaroni pie Macaroni pie is a casserole dish based on baked macaroni and cheese. Primary ingredients include elbow macaroni, cheese and milk. It is prepared in various regions of the world, and variations of the dish exist. For example, in Scotland, it is typically prepared using a Scotch pie crust, while in other areas no crust is used. Recipes from the 1800s in the United States include various meats, while contemporary versions may not include meats. Typical ingredients in macaroni pie include macaroni noodles, cheese, milk, butter, flour, salt, pepper and various spices. Additional ingredients sometimes used include onion and