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IUCN Red List Categories – Terms & Definitions

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List………….. bird life science

IUCN Red List Criteria

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

Population and Trend

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

Range and Country Distribution

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

Habitats and Altitude

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

Threats, stresses and impact

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

Data Quality and Data Derivation

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

Extinct species

The IUCN Red List Categories and Criteria are an objective and widely accepted system for classifying species at high risk of extinction. BirdLife coordinates the assessment of the status of the world’s birds using these categories and criteria and, as the official Red Listing Authority for birds for the IUCN Red List…………..

Red list criteria

What’s new (2009)

2009 Red List Updates

BirdLife International’s 2009 update of the IUCN Red List for birds follows the publication in 2008 of Threatened Birds of the World when all the world’s birds were comprehensively assessed against the IUCN Red List criteria

threatened birds