The term "Genus Catharacta", also known as skua, refers to a group of seabirds that are known for their predatory behavior. These birds are often found in the Arctic regions, where they prey on other seabirds, fish, and even small mammals. While the term "Genus Catharacta" may be the scientific name for these birds, there are also several other synonyms that can be used to refer to them. Some of these synonyms include great skua, brown skua, southern skua, and parasitic jaeger. Each of these terms is commonly used to describe different species of the skua family, all of which are known for their sharp beaks and fierce hunting skills.