How this was put together
The observations here come from two public IUCN sources: the CSV export of IUCN Red List version 2026-1 downloaded from iucnredlist.org, and the public IUCN API (api.iucnredlist.org). Each report names which of the two it reads under Source. Some reports compare the Red List against the Catalogue of Life as a taxonomic reference; the Catalogue of Life release used is named on those pages. The observations were gathered while preparing Red List data for use on Wikipedia and Wikidata, where small differences in names, formatting, and coverage surface naturally.
How to read the lists
- Each report has a short preview on its page and a full sortable, filterable list behind the full list link.
- Rows are ordered with the entries most likely to help first: full species before subspecies and varieties, and current assessments before historical ones where that information is available.
- Where a row maps to a Red List page, the scientific name links to it.
- Status badge colours are only a reading aid and are not the official IUCN category colours.
Scope of a "species"
Where a report counts species, it means global, species-rank assessments: rows with no infraspecific rank (subspecies or variety) and no subpopulation or regional scope. Subspecies, varieties, subpopulations, and regional assessments are listed separately where relevant.
Caveats
- Counts are computed from the public CSV export and API data and may differ slightly from figures published elsewhere.
- Every observation is automated and may be incomplete or mistaken.
- Only names, classification, formatting, and coverage are examined. The scientific content of assessments (categories, criteria, narratives, ranges, maps, citations) is out of scope.