Phaethon rubricauda, commonly known as the Red-tailed Tropicbird, is a seabird found primarily in tropical and subtropical regions. It is characterized by its striking white plumage, long tail feathers, and distinctive red bill. These birds are excellent fliers, often seen gliding gracefully over the ocean. The Red-tailed Tropicbird typically nests on remote islands, laying a single egg in a rocky crevice or on the ground. Their diet mainly consists of fish and squid, which they catch by diving into the water. This species is known for its loud, distinctive calls, especially during the breeding season.