The conservation status of a group of organisms indicates whether the group still exists and how likely the group is to become extinct in the near future. Many factors are taken into account when assessing conservation status: not simply the number of individuals remaining, but the overall increase or decrease in the population over time, breeding success rates, and known threats. Various systems of conservation status are in use at international, multi-country, national and local levels, as well as for consumer use such as sustainable seafood advisory lists and certification. The two international systems are by the International Union for Conservation of Nature (IUCN) and The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
An IUCN Red List Critically Endangered 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.
The Tanimbar bush warbler is a species of bird in the family Cettiidae. It is found in Yamdena. Its natural habitat is subtropical or tropical moist lowland forest. It is threatened by habitat loss.
The Tongan ground dove, also known as the shy ground dove or friendly ground dove, is a species of bird in the family Columbidae. It is found in American Samoa, Fiji, Samoa, Tonga and Wallis and Futuna Islands. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
The Marquesan kingfisher or Marquesas kingfisher is a species of bird in the family Alcedinidae. It is endemic to French Polynesia. It is threatened by habitat loss and predation by introduced species, and is currently classified as Critically endangered, with fewer than 500 individuals left in the wild.
The dwarf jay is a species of bird in the family Corvidae. It is endemic to Mexico. Its natural habitat is subtropical or tropical moist montane forests, specifically comprising an oak-pine mix. As its name would imply, this is the smallest member of the family Corvidae at 20–23 cm long and weighing 41 g. It is threatened by habitat loss.
Grallaricula is a genus of bird in the family Grallariidae.
The rusty-breasted antpitta is a species of bird in the family Grallariidae. It is found in the Andes of Colombia and Venezuela. Its natural habitats are subtropical or tropical moist montane forest and heavily degraded former forest.
The ochre-breasted antpitta is a species of bird placed in the family Grallariidae. It is found in Bolivia, Colombia, Costa Rica, Ecuador, Panama, and Peru. Its natural habitat is subtropical or tropical moist montane forests.
The scallop-breasted antpitta is a species of bird in the family Grallariidae. It is endemic to the Venezuelan Coastal Range.
The slaty-crowned antpitta is a species of bird placed in the family Grallariidae.
The ochre-fronted antpitta is a species of bird in the family Grallariidae. It is endemic to Peru.
The Peruvian antpitta is a species of bird in the family Grallariidae. It is found in Ecuador and northern Peru.
The Biak monarch, or Biak monarch flycatcher, is a species of bird in the family Monarchidae. It is endemic to Biak Island, Indonesia.
The Mussau monarch, also known as the white-breasted monarch, is a species of bird in the family Monarchidae. It is endemic to the Bismarck Archipelago of Papua New Guinea. Its natural habitats are subtropical or tropical moist lowland forests and rural gardens. It is threatened by habitat loss.
The Kilombero weaver is a species of bird in the family Ploceidae. It is endemic to Tanzania.
The São Tomé paradise flycatcher, also known as São Tomé flycatcher, is a species of bird in the family Monarchidae. The species was described by Thomas Richard Heywood Thomson in 1842, with Tchitrea atrochalybeia the binomial and Fernando Po given as the type locality. The species is endemic to São Tomé Island. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical moist lowland forests.
Sage-grouse are grouse belonging to the bird genus Centrocercus. The genus includes two species: the Gunnison grouse and the greater sage-grouse. These birds are distributed throughout large portions of the north-central and Western United States, as well as the Canadian provinces of Alberta and Saskatchewan. The International Union for Conservation of Nature classified the C. minimus species as endangered in 2020 and C. urophasianus as near threatened in 2016.
The Sucre antpitta is a species of bird placed in the family Grallariidae.
The rufous-breasted antpitta or leymebamba antpitta is a species of bird in the family Grallariidae. It was first described by American ornithologist and entomologist Melbourne Armstrong Carriker. It is found in Peru and western Bolivia. Its natural habitats are subtropical or tropical moist montane forest and heavily degraded former forest. It has been recently considered a subspecies of Grallaricula ferrugineipectus.
