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 bread crumbs. Other ingredients may also be used. It can be prepared as a low-fat dish using reduced fat cheese and skim milk. Some versions, such as those in Scotland, are prepared using a pie crust, while others are not. It may be served sliced into wedges. In the Caribbean, macaroni pie is typically prepared without using a pie crust. In the Caribbean, it is sometimes consumed cold, which may be referred to as "Caribbean style". Macaroni pie is a popular dish in Barbados, where it is commonly consumed as a side dish along with fried fish. It is sometimes