Sterna is a genus of birds commonly known as terns, which belong to the family Laridae. These birds are typically found near water bodies, including oceans, rivers, and lakes. Terns are characterized by their slender bodies, long wings, and pointed beaks, which they use to catch fish and other small aquatic creatures. Terns are known for their graceful flight and often exhibit a distinctive diving behavior when hunting. They are migratory birds, traveling long distances between breeding and wintering grounds. Many species within the Sterna genus are recognized for their striking plumage, which can vary significantly between species.