The South Polar Skua (Catharacta maccormicki) breeds in Antarctica, and in winters lives along Pacific and Caribbean coasts. It lives alone on open sea. This bird is 53 cm (21 inches) in height and 1.1 Kg in weight.
Head, neck and underparts vary from pale brownish through buffy-brown to dark sooty-brown. Chest and head sometimes flecked with yellowish-white. Mantle blackish-brown, wing-linings dusky, and bases of primaries white. Bill and legs black. Its diet is based on fishes.