Watercolor portrait of Royal Tern (Thalasseus maximus)

Royal Tern

Thalasseus maximus
Common Koor-rik roll with short barks

Learn to identify the Royal Tern by ear. Master the "kree-ee-kree" phrase and tell it apart from similar species.

“koorrr-rik! bark-bark”

What the Royal Tern sounds like

A deep koorrr-rik unfurls from the throat, with blunt little barks tucked around it.

How to tell it apart

Listen for: “kree-ee-kree”

Where you'll hear it

Year-round resident in the southeastern United States, Caribbean, Gulf of Mexico, and Pacific coast of South America; northern Atlantic breeders migrate south in winter.

Open saltwater along ocean coasts, bays, estuaries, lagoons, sandy beaches, and offshore sandbars. Rarely ventures far inland.

Nests from late April to July on flat, sparsely vegetated beaches or shell banks; post-breeding dispersal begins midsummer, with winter flocks forming August–March.

How to recognize it by sight

The Royal Tern is a large, elegant seabird instantly recognizable by its shaggy black crest and long orange bill. It patrols warm coastal waters, plunging head-first to snatch fish near the surface. Gregarious at all seasons, it breeds in dense colonies on isolated beaches and islands, often mixing with other tern species.

Similar species

Caspian Tern

Caspian larger and bulkier with thicker blood-red bill and dark under primaries

Elegant Tern

Elegant slightly smaller with noticeably drooped bill tip

Sandwich Tern

Sandwich has slender black bill with yellow tip

Royal Tern song FAQ

What does a Royal Tern sound like?
A deep koorrr-rik unfurls from the throat, with blunt little barks tucked around it. Listen for the "kree-ee-kree" phrase.
How do I tell a Royal Tern from a Caspian Tern?
Caspian Tern: Caspian larger and bulkier with thicker blood-red bill and dark under primaries. Caspian shows dark cap year-round, rarely shows large white forehead in winter.
When is the best time to hear a Royal Tern?
Nests from late April to July on flat, sparsely vegetated beaches or shell banks; post-breeding dispersal begins midsummer, with winter flocks forming August–March.