Birds
Caspian Tern
Hydroprogne caspia · also called Caspian terns
Gripping a fish in a bill far heavier than any other tern could manage, a Caspian tern lives up to its status as the largest member of the entire tern family, a near-global traveller with a harsh, crow-like call unlike anything else on the beach.
Overview
The Caspian tern, Hydroprogne caspia, is the largest tern species in the world, native to coastal and wetland habitat across a near-global range spanning several continents. Its record-holding size, massive blood-red bill, and unusually wide distribution across North America, Europe, Asia, Africa, and Australia make it one of the most physically distinctive and geographically far-reaching terns found anywhere.
A tern built on a different scale
Everything about the Caspian tern runs larger than expected for a tern, from its overall size down to the sheer thickness of its bill, giving it access to prey and a physical presence that smaller tern species simply cannot match.
Status
Least Concern, remaining widespread across suitable coastal and wetland habitat spanning several continents.
Caspian Tern: common questions
How big is the Caspian tern compared to other terns?
This species is the largest tern in the world, considerably bigger and heavier than any other member of the tern family, a size difference reflected in its massive, thick, blood-red bill.
Why does the Caspian tern have such a large bill?
This species' massive, thick bill lets it seize and handle notably larger fish than most other terns are capable of taking, a physical advantage that comes with its overall larger body size.
What does the Caspian tern sound like?
This species has a distinctively harsh, crow-like call, quite different from the higher-pitched calls typical of most other tern species, making it identifiable by sound alone in many cases.
How widespread is the Caspian tern?
This species has one of the widest distributions of any tern, found across parts of North America, Europe, Asia, Africa, and Australia, nesting on both coastal and inland lake sites.