Terns are a group of generally medium to large seabirds typically with grey or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water. Terns are generally long-lived birds, with several species known to live in excess of 30 years.
Terns are a group of seabirds typically characterized by grey or white plumage and black markings on their head. These birds primarily feed on fish through diving, although some capture insects from freshwater surfaces. Terns are known for their remarkable longevity, with several species living beyond 30 years.