The whistling ducks or tree ducks are a subfamily, Dendrocygninae, of the duck, goose and swan family of birds, Anatidae. In other taxonomic schemes, they are considered a separate family, Dendrocygnidae. Some taxonomists list only one genus, Dendrocygna, which contains eight living species, and one undescribed extinct species from Aitutaki of the Cook Islands, but other taxonomists also list the white-backed duck under the subfamily.
The wandering whistling duck is a species of whistling duck. They inhabit tropical and subtropical Australia, the Philippines, Borneo, Indonesia, Papua New Guinea and the Pacific Islands.
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 exist and are in use at international, multi-country, national and local levels as well as for consumer use.
Quercus lyrata, the overcup oak, is an oak in the white oak group. The common name, overcup oak, refers to its acorns that are mostly enclosed within the acorn cup. It is native to lowland wetlands in the eastern and south-central United States, in all the coastal states from New Jersey to Texas, inland as far as Oklahoma, Missouri, and Illinois. There are historical reports of it growing in Iowa, but the species appears to have been extirpated there. It is a slow-growing tree that often takes 25 to 30 years to mature. It has an estimated lifespan of 400 years.
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.
Notiosorex cockrumi, also called Cockrum's gray shrew or Cockrum's desert shrew, is a tiny species of shrews named in 2003. This red-toothed shrew, which is as light as a penny, is the first new mammal species from Arizona since 1977. Its range extends from Arizona to central Sonora, Mexico.
Chuquiraga arcuata is a species of flowering plant in the family Asteraceae. It is endemic to Ecuador. Its natural habitat is subtropical or tropical dry shrubland. It is threatened by habitat loss.
The barred fruiteater is a species of bird in the family Cotingidae, found in Bolivia, Colombia, Ecuador, Peru, and Venezuela. Its natural habitat is subtropical or tropical moist montane forests. The population is stable, and they are considered common.
Achyranthes mutica is a species of plant in the family Amaranthaceae. It is endemic to Hawaii. It is a perennial shrub that grows up to 2 ft (0.61 m) tall. Its natural habitats are dry forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.
Belonophora ongensis is a species of flowering plant in the family Rubiaceae. It is native to Gabon and Cameroon. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Pauridiantha divaricata is a species of plant in the family Rubiaceae. It is endemic to Cameroon. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Pauridiantha is an afrotropical genus of plant in family Rubiaceae.
Pauridiantha insularis is a species of plant in the family Rubiaceae. It is endemic to São Tomé Island.
Pauridiantha talbotii, synonym Pauridiantha venusta, is a species of plant in the family Rubiaceae. It is native to Cameroon, Equatorial Guinea, Gabon and Nigeria.
Pouteria arcuata is a species of plant in the family Sapotaceae. It is endemic to Venezuela.
Pauridiantha chlorantha is a species of plant in the family Rubiaceae. It is endemic to Tanzania. Under the synonym Rhipidantha chlorantha, it was the only species in the monotypic genus Rhipidantha.
Pitcairnia arcuata is a flowering plant in the Bromeliaceae family. It is native to Costa Rica, Panama, Colombia, Peru, and Ecuador.
Cyrtorchis is a genus of flowering plants from the orchid family Orchidaceae native to Africa.
Amorpha ouachitensis is an uncommon North American species of flowering plant in the legume family known by the common names Ouachita leadplant, Ouachita Mountain leadplant, Ouachita false indigo, and Ouachita indigobush. It is native to Oklahoma and Arkansas in the United States.
Urophylleae is a tribe of flowering plants in the family Rubiaceae and contains 237 species in 6 genera. Its representatives are found in the tropics.
