Southern rockhopper penguin may just be a colour morph of the macaroni penguin. Interbreeding with the macaroni penguin has been reported at Heard and Marion Islands, with three hybrids recorded there by a 1987-88 Australian National Antarctic Research Expedition. The southern rockhopper penguin group has a global population of roughly 1 million pairs. About two-thirds of the global population belongs to "E. c. chrysocome" which breeds on the Falkland Islands and on islands off Argentina and southern Chile. These include most significantly Isla de los Estados, the Ildefonso Islands, the Diego Ramírez Islands and Isla Noir. "E. c. filholi" breeds on the Prince
Rockhopper Exploration Rockhopper Exploration Rockhopper Exploration PLC (LSE:RKH) is an oil and gas exploration company headquartered in Salisbury, Wiltshire, United Kingdom. It owns offshore exploration and production licences in the North Falkland Basin in the waters north of the Falkland Islands. Rockhopper is listed on the Alternative Investment Market of the London Stock Exchange. Rockhopper was founded in 2004 to explore for oil and gas in the Falkland Islands. It received a listing on the AIM market in 2005. On 16 April 2010, Rockhopper commenced drilling of its first exploration well, 14/10-B (subsequently renamed 14/10-2) on its Sea Lion prospect using the