South polar skua (Catharacta maccormicki) chick about to fledge, will have much lighter plumage cf to Brown skua, Ross Sea, Antarctica, Southern Ocean

bird birds aves charadriiformes stercorariidae stercorarius seabird seabirds skuas maccormick?s antarctic chicks babies young offspring juvenile juveniles fledgling fledglings ocean oceanic sea marine