The arctic tern is a small seabird known for its remarkable migratory journey. It breeds in the Arctic regions during the summer and travels to the Antarctic for the winter, covering about 44,000 miles each year. This makes it one of the longest migratory birds in the world. With a wingspan of about 28 to 30 inches, the arctic tern has a slender body and a distinctive black cap on its head. Its plumage is mostly white with gray wings, and it has a sharp, pointed bill. These birds are known for their agility in flight and often feed on small fish and invertebrates while gliding over the ocean.