Along with pages being regularly updated to reflect the new data available in each Red List update, new pages, tools and functionality are added to The IUCN Red List website at any time throughout the year. The most recent additions to the website are listed below.
Summary statistics tables for summaries by taxonomic group (tables 3 and 4) and summaries by country (tables 5 and 6) are now automated and interactive. These tables are still available to download as PDF documents, but now they are also available as CSV files. The figures in the tables also include links to the search results page, showing lists of the species these figures refer to. The tables are available in full, or you can decide to view just one section of the table (e.g., fungi only, or species in South America only).
The Red List Indices (RLIs) are now available on The IUCN Red List website in the Advanced Search. To search for a Red List Index, select the new "Red List Indices" option.
The RLIs are arranged in different subsets: global, regional and subregional, thematic, and Sustainable Development Goals (SDGs). Within each subset, the RLIs are disaggregated to show trends within specific groups (e.g., freshwater species only, species in Brazil, African species, etc.).
For more information about the Red List Indices, see the Red List Index page.
The Advanced Search on the Red List website now allows users to filter the data to show only Critically Endangered taxa that are flagged as Possibly Extinct [CR(PE)] or Possibly Extinct in the Wild [CR(PEW)]. To see these taxa, scroll down the Advanced Search page to the ‘INCLUDE’ section, then use the checkboxes next to ‘CR – Possibly Extinct’ and ‘CR – Possibly Extinct in the Wild’. To see the list of species only, make sure the Species checkbox in the 'INCLUDE' section is ticked; to see the list of subspecies and varieties only, make sure the Subspecies and varieties checkbox is ticked.
A Country Legends search filter has been added to the Advanced Search. This allows the data to be filtered based on country codes for presence (extant, possibly extant, possibly extinct, extinct post-1500, presence uncertain) and origin (native, reintroduced, introduced, vagrant, origin uncertain, assisted colonisation). The Country Legends filter appears beneath the Land Regions filter in the Advanced Search.
By combining selections in the Land Regions and the Country Legends search filters, search results can be tailored to, for example, find a list of species occurring in a particular country, excluding introduced and vagrant species and species with uncertain occurrence in that country.
IUCN recommends that all Red List assessments be updated at least once every 10 years (ideally every 4-5 years). However, with limited funding and capacity for red listing, this is not always possible. The IUCN Red List therefore includes some assessments that are now more than 10 years old and need to be updated. These are retained on the Red List because they are the most recent extinction risk assessments available for these taxa. The Advanced Search now includes an option to filter the data to see all assessments that need to be updated.
The Red List website now includes a search filter that allows you to find a list of endemic taxa (i.e., taxa that are recorded as being native to only one country). First, use the Land Regions filter in the Advanced Search page to find the list of taxa occurring in a specific country. The example below shows a search for all species occurring in Cambodia.
Next, scroll down the page to the INCLUDE checkboxes and tick Endemic. In the example, the list of species reduces to 30 endemic species in Cambodia.
The IUCN Red List Unit receives thousands of emails each year, often from people asking about how Red List data can be used, the assessment process, how to use the website, and how people can help species. The new Frequently Asked Questions (FAQ) page answers many of these questions.
The IUCN Red List is more than just a list of species names and Red List Categories. It is a compendium of information detailing the current extinction risk for the animal, fungus and plant species that have been assessed to date. The new Supporting Information page provides a comprehensive overview of all the information that is included in the online Red List assessment Fact Sheets.
Along with the Red List Indices now being available on the website, the Red List Index (RLI) page has also been updated to provide more information about what the RLI tells us about the state of biodiversity, how RLIs are used, links to more RLI publications, and guidance on calculating RLIs.
The Summary Statistics page (in the Resources and Publications section) is regularly edited to include all the updated statistics tables for the most recent version of The IUCN Red List. For the 2020-2 Red List update, the Summary Statistics page now includes links to the automated statistics page for summaries by taxonomic group (tables 3 and 4) and summaries by country (tables 5 and 6).
Each time the Red List is updated to a new version, the Spatial Data Download page (in the Resources and Publications section) is also updated to provide all the updated map data for various groups of species. In the past, only polygon spatial data was available on the Red List website, however now the Spatial Data Download page provides bulk downloads of point data, where this is available (mostly for plant groups, but also for some invertebrate groups).
The most recent update of the Guidelines for Using the IUCN Red List Categories and Criteria (version 14) included reference to two models (a Threats model and a Records and Surveys model) that help Assessors determine the probability of a species now being Extinct or Extinct in the Wild. To use those models, Extinction Risk Assessment tools are now available to download from the Resources & Publications section.
All assessment Fact Sheets on the Red List website include a Download tool, where a range of files are available (e.g., the PDF version of the assessment, any supplementary information, spatial data, etc.). The most recent addition to the download files is an JPG image file of the range map.
Click on the link to open the image file. To save the image file, right click on the image and select "Save Image As...".
Rasters and image files for species richness and range-size rarity are now available to download from the Species Richness and Range Rarity Data page in the Resources and Publications section. These are based on the raw IUCN ranges (version 2017-3) for amphibians, birds and mammals.
The IUCN Red List website has the option to change the language setting from English to French, Spanish or Japanese (see the top right corner of the website). We do not yet have complete translations for all pages on the website, but we are gradually adding translated versions as they become available.
The most recent pages that are now available in Spanish are:
Background and History [Antecedentes e Historia]
Barometer of Life [Barómetro de Vida]
How the Red List is Used [Cómo se usa la Lista Roja]