Adult brown skuas (Catharacta antarctica) feeding on a penguin carcass near the Antarctic peninsula, Antactica, Polar Regions

brown skua feeding penguin carcass antarctica polar regions wildlife scavengers birds catharacta antarctica animal behavior ecology natural behavior predation antarctic ecosystem wildlife interaction seabirds coastal marine biology animal feeding bird watching cold environment competition carnivorous habitat shore natural habitat scavenging dietary habits avian species biodiversity predators migration feeding frenzy wildlife observation ecological balance bird behavior plankton antarctic continent avian scavengers seasonal feeding marine ecosystem wildlife conservation climate environment environmental science ecological interactions terrestrial ecosystems