On average, a skua is about 56 cm (22 in) long, and 121 cm (48 in) across the wings. They have longish bills with a hooked tip, and webbed feet with sharp claws. They look like large dark gulls, but have a fleshy cere above the upper mandible.

The great skua, or bonxie, is a bird about 60 cm (24 inches) long, resembling a gull but heavily built, with a brownish body and large, white wing patches. It is the only bird that breeds both in the Arctic and in the Antarctic.

The South Polar Skua (Catharacta maccormicki) is the size of a largish gull. They nest all around continental Antarctica and breed into the deep south.

The great skua (Stercorarius skua), sometimes known by the name bonxie in Britain, is a large seabird in the skua family Stercorariidae. It is roughly the size of a herring gull. It mainly eats fish caught at the sea surface or taken from other birds.

2024年5月27日 · Four skua species (south polar, pomarine, parasitic, and long-tailed) breed on the Arctic coastline, then head to warmer waters, like the Southern Ocean, to spend winters. The brown skua typically stays in the Southern Ocean, while the great skua stays in the North to Northeast Atlantic.

The brown skua (Stercorarius antarcticus), also known as the Antarctic skua, subantarctic skua, southern great skua, southern skua, or hākoakoa , is a large seabird that breeds in the subantarctic and Antarctic zones and moves further north when not breeding.

The Great skua (Stercorarius skua) is a large seabird in the skua family Stercorariidae. It mainly eats fish caught at the sea surface or taken from other birds. The Great skua is sometimes known by the name bonxie in Britain.

The skuas are predatory sea birds known for their aggressive feeding habits and long migration routes. Their seafaring relatives include gulls, auks, terns, skimmers, and waders, all belonging to the Lari suborder. The genus Stercorarius was introduced in the late 1700s with the pomarine skua as the type species.

2024年6月23日 · Each species of skua plays a unique role in marine ecosystems, contributing to the dynamics of predator-prey interactions and the overall biodiversity of their habitats. Feeding Behavior of Skuas. Their opportunistic and often aggressive nature characterizes the feeding behavior of skuas.

Powerful dark brown seabird, resembles a dark, heavily built immature gull. Note eye-catching white flashes in the primaries when in flight. Adults have distinct pale mottling on the upperparts, which serves to separate them from adults of the very similar South Polar Skua.