Heard & McDonald Islands

5 threatened species · Biodiversity Intelligence Dashboard

Threatened Species

5

CR + EN + VU

Critically Endangered

1

Highest risk

Endangered

1

Very high risk

Vulnerable

3

High risk

Declining

40%

2 species

Category Breakdown
CR 1
EN 1
VU 3
CR: 1
EN: 1
VU: 3

Critically Endangered

120%

Extremely high risk of extinction in the wild.

Endangered

120%

Very high risk of extinction in the wild.

Vulnerable

360%

High risk of extinction in the wild.

Threatened total — 5 species

Species by Group
🐦

birds

1

1 threatened

🐟

fishes

2

2 threatened

Global Share

0.01%

of globally threatened species

Country Rank

#251

of 277 countries

Endemic Threatened

0

Found only here

Top Threats
1.Fishing & harvesting aquatic resources2 species
2.Bottom trawling and deep-sea fishing1 species
3.Climate change altering microhabitat conditions1 species
4.Climate change and warming waters1 species
5.Climate change impacts on island ecosystems1 species
6.Habitat degradation from invasive plants1 species
7.Habitat destruction from marine infrastructure1 species
8.Habitat loss from agricultural conversion1 species

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2026). Heard & McDonald Islands: Biodiversity Dashboard. SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/countries/HM

Species counts reflect IUCN Red List threatened categories (CR, EN, VU). · Full citation guide & data usage terms

Frequently asked questions

How many threatened species are in Heard & McDonald Islands?
Heard & McDonald Islands has 5 threatened species recorded in the SpeciesRadar database — 1 of those are Critically Endangered (CR), facing an extremely high risk of extinction. The figures combine IUCN Red List data with national red list assessments where available.
What is the most endangered species in Heard & McDonald Islands?
Among the 1 Critically Endangered species in Heard & McDonald Islands, Rosette Pixie-cup Lichen (Cladonia pocillum) is one of the most at-risk — featured prominently on the country dashboard. The full list of CR species is filterable on the country page.
What protected areas exist in Heard & McDonald Islands?
Protected area coverage for Heard & McDonald Islands is summarised on the country dashboard, drawing on the World Database on Protected Areas (WDPA) and national park designations.