Comparison of Red list classes above
and NatureServe status below
A vulnerable species is a species which has been categorized by the International Union for Conservation of Nature that is threatened with extinction unless the circumstances that are threatening its survival and reproduction improve.
Vulnerability is mainly caused by habitat loss or destruction of the species' home. Vulnerable habitat or species are monitored and can become increasingly threatened. Some species listed as "vulnerable" may be common in captivity, an example being the military macaw.
There are currently 5196 animals and 6789 plants classified as vulnerable, compared with 1998 levels of 2815 and 3222, respectively.Practices such as Cryoconservation of animal genetic resources have been enforced in efforts to conserve vulnerable breeds of livestock specifically.
The International Union for Conservation of Nature uses several criteria to enter species in this category. A taxon is Vulnerable when it is not critically endangered or Endangered but is facing a high risk of extinction in the wild in the medium-term future, as defined by any of the following criteria (A to E):
A) Population reduction in the form of either of the following:
B) Extent of occurrence estimated to be less than 20,000 km2 or area of occupancy estimated to be less than 2000 km2, and estimates indicating any two of the following:
C) Population estimated to number fewer than 10,000 mature individuals and either:
D) Population very small or restricted in the form of either of the following:
E) Quantitative analysis showing the probability of extinction in the wild is at least 10% within 100 years.
The examples of vulnerable animal species are hyacinth macaw, mountain zebra, gaur, black crowned crane and blue crane
Lear's macaw, also known as the indigo macaw, is a large all-blue Brazilian parrot, a member of a large group of neotropical parrots known as macaws. It was first described by Charles Lucien Bonaparte in 1856. Lear's macaw is 70–75 cm long and weighs around 950 g. It is coloured almost completely blue, with a yellow patch of skin at the base of the heavy, black bill.
Sanzinia madagascariensis, also known as the Malagasy tree boa, or Madagascar tree boa) is a non-venomous boa species endemic to the island of Madagascar. It was considered conspecific with the Nosy Komba ground boa.
Acrantophis madagascariensis is a species of boid snake in the subfamily Sanziniinae that is endemic to the island of Madagascar. Its common names include Malagasy ground boa and Madagascar boa.
Montivipera albizona, the central Turkish mountain viper, is a venomous viper species endemic to the mountainous regions of central Turkey. No subspecies are currently recognized.
Vipera kaznakovi is a species of venomous snake in the subfamily Viperinae of the family Viperidae. The species is endemic to Turkey, Georgia, and Russia. No subspecies are currently recognized.
An IUCN Red List Critically Endangered (CR) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of 2021, of the 120,372 species currently tracked by the IUCN, there are 8,404 species that are considered to be Critically Endangered.
Kleinmann's tortoise, also called commonly the Egyptian tortoise, Leith's tortoise, and the Negev tortoise, is a critically endangered species of neck-hiding tortoise in the family Testudinidae. The species is native to Egypt, Libya, and Israel. The species was once more widespread, but its numbers are now dwindling. The species is nearly extinct in Egypt, and complete extinction in the wild is a looming threat unless more actions are taken to protect this species.
The heath mouse is a species of mouse in the subfamily Murinae, the Old World rats and mice, found in Australia.
Bothrops pirajai is a species of venomous snake, a pit viper in the subfamily Crotalinae of the family Viperidae. The species is endemic to Brazil. There are no subspecies that are recognized as being valid.
Protea comptonii, also known as saddleback sugarbush, is a smallish tree of the genus Protea in the family Proteaceae. It is found in South Africa and Eswatini.
Exiliboa is a monotypic genus created for the non-venomous dwarf boa species, Exiliboa placata, which is endemic to southern Mexico. No subspecies are currently recognized.
Bothriechis aurifer is a venomous pit viper species found in Mexico and Guatemala. No subspecies are currently recognized.
Bothriechis rowleyi is a species of pit viper, a venomous snake in the subfamily Crotalinae of the family Viperidae. The species is endemic to Mexico. There are no subspecies that are recognized as being valid.
Heterodon simus, commonly known as the southern hog-nosed snake, is a harmless snake species endemic to the southeastern United States. No subspecies are currently recognized.
Monachoides vicinus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies.
The Cantabrian capercaillie is a subspecies of the western capercaillie in the grouse family Tetraonidae. It is one of two subspecies found in Spain.
Betula klokovii is a species of tree restricted to Ukraine. These trees grow on sandy hills in steppe grasses and dry chalkstone or in open woodlands. It is only found in two mountains: Strakhova and Maslyatyn, near Kremenets in the Ternopil region.
Podonephelium subaequilaterum is a tree species endemic to the sclerophyllous forests of New Caledonia. This species of trees suffers from forest reduction and fragmentation due to agriculture on the west coast of the country. The main threat to the species comes from habitat destruction due to the Javan rusa deer and uncontrolled forest fires. Its area of occupancy (AOO) is estimated to be 12 square kilometres (4.6 sq mi) and its extent of occurrence (EOO) is around 15 square kilometres (5.8 sq mi). The species is observed to be in a continuing decline of its quality of habitat, number of subpopulations, extent of occurrence, area of occupancy and the number of mature individuals.
Endangered species as classified by the International Union for Conservation of Nature (IUCN), are species which have been categorized as very likely to become extinct in their known native ranges in the near future. On the IUCN Red List, endangered is the second most severe conservation status for wild populations in the IUCN's schema after critically endangered. In 2012, the IUCN Red List featured 3,079 animal and 2,655 plant species as endangered worldwide. The figures for 1998 were 1,102 and 1,197 respectively.
Photuris bethaniensis is a species of firefly in the genus Photuris.