Red-billed Tropic Bird - The Indian Ocean race of the Red-billed Tropicbird, P. a. indicus, was at one time considered a full species, the Lesser Red-billed Tropicbird from Pakistan and the western Republic of India.
Yellow-billed tropicbird - The White-tailed Tropicbird breeds on tropical islands laying a single egg directly onto the ground or a cliff ledge. It disperses widely across the oceans when not breeding, and sometimes wanders far. It feeds on fish and squid, caught by surface plunging, but this species is a poor swimmer. The call is a high screamed keee-keee-krrrt-krrt-krrt.
Red-tailed Tropic Bird - The Red-tailed Tropicbird looks like a stout tern, and hence closely resembles the other two tropicbird species. It has generally white plumage, often with a pink tinge, a black crescent around the eye and a thin red tail feather. It has a bright red bill and black feet.