Southern Ocean – fairly uniform temperatures of the deep ocean at the poles and the equator which differ by no more than 5 °C, and the major current systems or marine conveyor belt which transport egg and larva stages. The rocky shores of mainland Antarctica and its offshore islands provide nesting space for over 100 million birds every spring. These nesters include species of albatrosses, petrels, skuas, gulls and terns. The insectivorous South Georgia pipit is endemic to South Georgia and some smaller surrounding islands. Freshwater ducks inhabit South Georgia and the Kerguelen Islands. The flightless penguins are all located in the
Draining and development of the Everglades York paid at least 60 hunters to provide him with "almost anything that wore feathers, but particularly the Herons, Spoonbills, and showy birds". Hunters could collect plumes from a hundred birds on a good day. Plume harvesting became a dangerous business. The Audubon Society became concerned with the amount of hunting being done in rookeries in the mangrove forests. In 1902, they hired a warden, Guy Bradley, to watch the rookeries around Cuthbert Lake. Bradley had lived in Flamingo within the Everglades, and was murdered in 1905 by one of his neighbors after he tried to prevent him from hunting.