Royal Tern
CR

Royal Tern

Thalasseus maximus

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Royal_tern

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Royal Terns face severe threats from coastal development and human disturbance at their critical nesting colonies, where they breed in dense aggregations on sandy beaches and barrier islands. Climate change-induced sea level rise and increased storm intensity threaten to inundate their low-lying nesting sites, while pollution and overfishing reduce their marine prey availability. Conservation status may vary by region or assessment authority.

Threat summary

Habitat

Coastal marine environments including sandy beaches, barrier islands, salt marshes, and estuaries for nesting, with foraging occurring in nearshore waters, bays, and lagoons. Nests colonially on isolated sandy or shell beaches, often on small islands free from terrestrial predators.

MARINE· majorTERRESTRIAL· major

Other threatened species in Laridae

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Greater Black-backed Gull

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Scandinavian Lesser Black-backed GullVU

Scandinavian Lesser Black-backed Gull

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Little GullCR

Little Gull

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Olrog's GullEN

Olrog's Gull

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Frequently asked questions

Why is Royal Tern classified as Critically Endangered?
Royal Tern is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Royal Terns face severe threats from coastal development and human disturbance at their critical nesting colonies, where they breed in dense aggregations on sandy beaches and barrier islands. Climate change-induced sea level rise and increased storm intensity threaten to inundate their low-lying nesting sites, while pollution and overfishing reduce their marine prey availability. Conservation status may vary by region or assessment authority.
Where does Royal Tern live?
Royal Tern occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Royal Tern?
The main threats to Royal Tern are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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