WAzemiopinae is the name of a monogeneric subfamily created for the genus Azemiops that contains the venomous viper species A. feae and A. kharini. No subspecies are recognized. The first specimen was collected by Italian explorer Leonardo Fea, and was described as a new genus and new species by Boulenger in 1888. Formerly considered to be one of the most primitive vipers, molecular studies have shown that it is the sister taxon to the pit vipers, Crotalinae. It is found in the mountains of Southeast Asia in China, southeastern Tibet and Vietnam. Common names are Fea's vipers.
WThe vasa parrots (Coracopsis) are three species of parrot which are endemic to Madagascar and other islands in the western Indian Ocean. Some taxonomists place the genus in Mascarinus.
WThe whistling ducks or tree ducks are a subfamily, Dendrocygninae, of the duck, goose and swan family of birds, Anatidae. They are not true ducks. 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.
WThe drongos are a family, Dicruridae, of passerine birds of the Old World tropics. The 29 species in the family are placed in a single genus Dicrurus. The drongo fantail, formerly named the pygmy drongo, is not closely related and is now placed in the family Rhipiduridae.
WThe maras are a genus (Dolichotis) of the cavy family of rodents. They are the sole extant representatives of the subfamily Dolichotinae. These large relatives of guinea pigs are common in the Patagonian steppes of Argentina, but also live in Paraguay and elsewhere in South America. Maras are the fourth-largest rodent in the world, after capybaras, beavers, and porcupines, reaching about 45 cm (18 in) in height.
WThe honey badger, also known as the ratel, is a mammal widely distributed in Africa, Southwest Asia, and the Indian subcontinent. Because of its wide range and occurrence in a variety of habitats, it is listed as Least Concern on the IUCN Red List.
WOnomastus is a genus of Asian jumping spiders that was first described by Eugène Louis Simon in 1900. It is the only genus in the subfamily Onomastinae.
WThe horned guan is a large, approximately 85 cm (33 in) long, turkey-like bird with glossy black dorsal plumage, red legs, a white iris, a yellow bill, and a red horn on top of its head. The breast and upper belly are white, and its long tail feathers are black with a white band near the base. Both sexes are similar. The young are duller with a smaller horn, and have a brown tail and wings.
WThe spur-winged goose is a large bird in the family Anatidae, related to the geese and the shelducks, but distinct from both of these in a number of anatomical features, and therefore treated in its own subfamily, the Plectropterinae. It occurs in wetlands throughout sub-Saharan Africa.
WThe river martins form a distinctive subfamily Pseudochelidoninae within the swallow and martin bird family Hirundinidae. The two species are the African river martin Pseudochelidon eurystomina, found in the Congo and Gabon, and the white-eyed river martin Pseudochelidon sirintarae, known only from one site in Thailand. These are medium-sized, largely black swallows that have a light buoyant flight and feed on insects caught in the air. They appear to be more terrestrial than other swallows, frequently walking rather than perching, and the white-eyed may be crepuscular. The African species excavates nest holes in sandy ridges in rivers, while the breeding locations and habits of the Asian bird are unknown.
WPesquet's parrot, also known as the Dracula parrot or as the vulturine parrot, is the only member of its genus. It is endemic to hill and montane rainforest in New Guinea.
WThe white-backed duck is a waterbird of the family Anatidae. It is distinct from all other ducks, but most closely related to the whistling ducks in the subfamily Dendrocygninae, though also showing some similarities to the stiff-tailed ducks in the subfamily Oxyurinae. It is the only member of the genus Thalassornis.