Birds
Royal Tern
Thalasseus maximus · also called royal terns
Carrying a heavy orange bill built for seizing fish at speed, a royal tern ranks among the largest terns in the world, its full black breeding cap fading to a streaked, patchy forehead for the rest of the year.
Overview
The royal tern, Thalasseus maximus, is one of the largest tern species in the world, native to coastal habitat spanning the Americas and parts of West Africa. Its heavy orange bill, seasonal shift from a full black cap to a patchy streaked forehead, and tendency to breed in massive, densely packed colonies make it one of the most visually striking and behaviourally coordinated terns found anywhere along its range.
Safety in enormous numbers
Royal tern colonies can grow so large and synchronised that chicks quickly gather into creches once mobile, a strategy that spreads the risk of predation across the group while parents range out to sea in search of fish.
Status
Least Concern, remaining widespread across suitable coastal habitat spanning the Americas and West Africa.
Royal Tern: common questions
How big is the royal tern compared to other terns?
This species is one of the largest terns in the world, noticeably bigger and more heavily built than most other tern species, second in size mainly to the even larger Caspian tern.
Does the royal tern always have a full black cap?
No, this species shows a full black cap only during the breeding season, which fades to a patchy, streaked forehead pattern for the rest of the year, a change useful for seasonal identification.
What is a creche in royal tern colonies?
A creche is a large group formed when royal tern chicks become mobile and gather together within the colony, a behaviour that helps protect chicks while parents forage for food.
Where does the royal tern live?
This species is native to coastal habitat spanning the Americas and parts of West Africa, breeding in large, dense colonies on sandy beaches and islands across its range.