Macaroni penguin been considered separate species, but the close similarities of their DNA sequences has led some, such as the Australian ornithologists Les Christidis and Walter Boles, to treat the royal as a subspecies of the macaroni. The two species are very similar in appearance; the royal penguin has a white face instead of the usually black face of the macaroni. Interbreeding with the Indo-Pacific subspecies of the southern rockhopper penguin ("E. chrysocome filholi") has been reported at Heard and Marion Islands, with three hybrids recorded there by a 1987–88 Australian National Antarctic Research Expedition. The macaroni penguin is a large, crested
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