The term 'Predatory Sea Bird' can be summarized as a SKUA, which is a four-letter word. Skuas are seabirds that belong to the family Stercorariidae and are found in both the Northern and Southern Hemispheres. They are known for their aggressive behavior and have been known to attack other birds, such as gulls, to steal their food. Skuas are also known to scavenge for food and feed on fish, eggs, and carrion.