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 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.
The slaty-backed hemispingus is a species of bird in the family Thraupidae that is endemic to Venezuela.
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 Tucumán mountain finch is a species of bird in the family Thraupidae. It is endemic to shrubby woodland in the Andes of north-western Argentina, but it is possible its distribution extends marginally into adjacent Bolivia. Together with the closely related Cochabamba mountain finch, it is placed in the genus Poospiza. It is threatened by habitat loss.
The Bolivian warbling finch is a species of bird in the family Thraupidae. It is found in Argentina and Bolivia. Its natural habitat is subtropical or tropical high-altitude shrubland.
The collared warbling finch is a species of bird in the family Thraupidae. It is found in Ecuador and Peru.
The gray-throated warbling finch is a species of bird in the family Thraupidae. It is found in forest borders and woodland in south-eastern Brazil, far eastern Paraguay, far north-eastern Argentina, and Uruguay. It was previously considered conspecific with the buff-throated warbling finch, and together they were known as the red-rumped warbling finch. The SACC found enough evidence to split them in 2009.
The black-and-rufous warbling finch is a species of bird in the tanager family Thraupidae.
The cinnamon warbling finch is a species of bird in the family Thraupidae. It is endemic to Argentina.
The rufous-breasted warbling finch is a species of bird in the family Thraupidae. It is endemic to Peru.
The bay-chested warbling finch is a species of bird in the family Thraupidae. It is endemic to southeastern Brazil.
The Cochabamba mountain finch is a species of bird in the family Thraupidae. It is endemic to shrubby woodland in the Andes of Bolivia. Together with the closely related Tucumán mountain finch, it is placed in the genus Poospiza. It is threatened by habitat loss.
The black-and-chestnut warbling finch is a species of bird in the tanager family Thraupidae. It is found on the slopes of the Andes in western Argentina and western Bolivia. Its natural habitats are woodland borders and hedgerows.
