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
Macaroni (horse) Macaroni (horse) Macaroni (1860–1887) was a British Thoroughbred racehorse and sire. In a career that lasted from October 1862 to September 1863 he ran eight times and won seven races. In 1863 he won all seven of his races including the 2000 Guineas at Newmarket, The Derby and the Doncaster Cup. Macaroni was bred by Richard Grosvenor, 2nd Marquess of Westminster at his Eaton stud in Cheshire. In 1861 Macaroni was one of several yearlings at the stud to be affected by an outbreak of an equine respiratory disease known as Strangles, which adversely affected his physical development and persuaded