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
Empress of Germany's bird of paradise endemic to upper Ramu River and Huon Peninsula of northeastern Papua New Guinea. The male is polygamous and displays in communal lek. The diet consists mainly of fruits, insects and arthropods. One of the most heavily hunted birds of paradise in the plume hunting era, the Empress of Germany's bird of paradise was the first bird of paradise to breed in captivity. It was bred by Prince K. S. Dharmakumarsinhji of India in 1940. The name commemorates the German Empress and queen consort of Prussia, Augusta Victoria of Schleswig-Holstein. In the wild, the Empress of Germany's bird of paradise is