Where are the main breeding grounds of king penguins?

On South Georgia Island over 30 colonies of A. patagonicus patagonicus reside. Colony sizes range from approximately 39,000 breeding pairs at both Salisbury Plains and St. Andrews Bay to 9,000 pairs located at Royal Bay. This subspecies is only found on South Georgia and the Falkland Islands. Another genetically unique subspecies, A. patagonicus halli, is only found on Crozet, Heard, Kerguelen, Macquarie and Prince Edwards islands.