Any of three species (genus Stercorarius, family Stercorariidae) of seabirds. They resemble dark gulls with a forward-set black cap and projecting central tail feathers. Jaegers have two colour phases: all brown or (more commonly) brown above and white below. They nest in the Arctic tundra and then go to sea, many as far as Australia and New Zealand. At sea they catch fish on their own, but, while nesting along coasts, they force terns and kittiwakes to disgorge their food, destroy the eggs and young of other seabirds, and capture land birds and rodents. The species range from 14 to 20 in. (35 to 50 cm) long. In Great Britain, jaegers are called skuas.