Tystie
VU

Tystie

Cepphus grylle

UnknownLCEULCEU

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

Overview

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

The Tystie faces mounting pressure from climate change-induced shifts in Arctic marine ecosystems, which alter prey availability and breeding habitat conditions. Coastal development and human disturbance at nesting sites compound these challenges, while oil spills and marine pollution pose additional risks to this seabird's survival in increasingly fragmented Arctic waters.

Threat summary

Habitat

Tysties inhabit rocky Arctic and subarctic coastlines, nesting in crevices and cavities among boulders, cliffs, and stone beaches. They forage in shallow coastal waters, diving to catch small fish and invertebrates in kelp beds and nearshore marine environments.

MARINE· majorTERRESTRIAL· major

Other threatened species in Alcidae

Northern GuillemotVU

Northern Guillemot

Uria aalge

Unknown
Thick-billed Murre / Brunnich's GuillemotEN

Thick-billed Murre / Brunnich's Guillemot

Uria lomvia

Unknown

Frequently asked questions

Why is Tystie classified as Vulnerable?
Tystie is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Tystie faces mounting pressure from climate change-induced shifts in Arctic marine ecosystems, which alter prey availability and breeding habitat conditions. Coastal development and human disturbance at nesting sites compound these challenges, while oil spills and marine pollution pose additional risks to this seabird's survival in increasingly fragmented Arctic waters.
Where does Tystie live?
Tystie 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 Tystie?
The main threats to Tystie 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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