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  2004 Red List 
 
    
 
2004 Red List of Threatened Species

The 2004 Red List of Threatened Species was released in conjunction with the Global Species Assessment. Global assessments are conducted every four years and the first one was released in 2000.

Searchable database

2004 IUCN Red List
of Threatened Species

Book

A Global Species
Assessment (2004)
  Executive summary and (0.1MB)
Complete book and (3.7MB)

Highlights of the 2004 Red List

Photo gallery
Slender loris (Loris tardigradus) from Sri Lanka is assessed as Endangered. Habitat fragmentation over the years has seriously reduced the area available for this species. Between 1956 and 1993, Sri Lanka lost more than 50% of forest cover to human activities, followed by a similar rate of decline in the remaining forest cover between 1994 and 2003 - photo © Anna Nekaris A gallery of images is available on the 2004 IUCN Red List website. more photos
 

Case studies
Threats
This section deals with threats to species due to, among others, over-fishing and climate change. more
Extinctions
Examples of extinctions including amphibians, molluscs, and the St. Helena olive. more
Conservation Success
Case studies covering conservation successes through, for example, re-introduction, captive breeding, environmental education, and habitat restoration. more
 

Species Profiles
The St. Helena olive (Nesiota elliptica) (Extinct) became Extinct in the Wild in 1994 and all attempts to propagate and maintain the species ex situ failed, with the last individual dying in December 2003 - photo © Rebecca Cairns-Wicks St. Helena olive
Profiled in the release of the 2003 IUCN Red List as Extinct in the Wild, this symbolic species is now sadly Extinct. more
The Hawaiian crow (Corvus hawaiiensis) is now listed as Extinct in the Wild after the last two known wild individuals disappeared from Hawaii in 2002. Habitat alteration, collecting and shooting, introduced predators (e.g., rats, the Indian mongoose) and predation from the native Hawaiian hawk, and avian malaria and pox carried by introduced mosquitoes have contributed to the crow’s decline. Some individuals remain in captive breeding facilities and a reintroduction plan is being developed - photo © Jack Jeffrey Photography Hawaiian crow
Moving from Critically Endangered to Extinct in the Wild, the last two known wild individuals of this species disappeared in 2002. more
Humphead wrasse (Cheilinus undulatus) is widely distributed on coral reefs and inshore habitats throughout much of the tropical Indo-Pacific, but it is nowhere common. Wherever it is fished, even if only moderately, density quickly declines and it appears now to have disappeared from several locations. It is particularly heavily exploited at the centre of its range in southeastern Asia for the live reef fish trade. Fishery-dependent and trade-related data suggest overall declines of at least 50% over the last 30 years - photo © John E. Randall Humphead wrasse In 1996, the humphead wrasse was assessed as Vulnerable. more
The fabulous green sphinx moth (Tinostoma smaragditis) was listed as Extinct in 1996, but in February 1998 a single male was attracted to a light trap on its home island of Kauai, Hawaii. Since 1998, further individuals have been trapped, but the species is listed as Endangered due to the impacts of invasive species on its habitat - photo © Mandy Heddle Fabulous green sphinx moth
This enthusiastically named species moved from Data Deficient to Endangered. more
For further information on a selection of species that feature in the 2004 IUCN Red List and the Global Species Assessment, please go here
   
Inside the 2004 Red List
Case studies
Species profiles
Summary tables
Graphics
Photos
Facts and figures