Macaroni penguin well as vocal, displays. These behaviours peak early in the breeding period, and colonies particularly quieten when the male macaroni penguins are at sea. Agonistic displays are those which are intended to confront or drive off or, alternatively, appease and avoid conflict with other individuals. Macaroni penguins, particularly those on adjacent nests, may engage in 'bill-jousting'; birds lock bills and wrestle, each trying to unseat the other, as well as batter with flippers and peck or strike its opponent's nape. Submissive displays include the 'slender walk', where birds move through the colony with feathers flattened, flippers moved to the front
Macaroni casserole According to a survey conducted in 2010 with 1,100 respondents, it is the second most popular everyday dish for dinner in Finland. Nowadays the dish most commonly made with minced meat, but is traditionally not made with cheese. However, originally the Finnish macaroni casserole was not made with meat. When prepared without meat it was often used as a replacement for potatoes in the meal and later on, it became a part of the dish that is known today. Macaroni casseroles are readily available in Finnish grocery stores as pre-packaged meals. In Sweden, the dish is called "makaronipudding" or "makaronilåda".