African pygmy goose | |
---|---|
Male in South Africa | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Anseriformes |
Family: | Anatidae |
Genus: | Nettapus |
Species: | N. auritus |
Binomial name | |
Nettapus auritus (Boddaert, 1783) | |
The African pygmy goose (Nettapus auritus) is a perching duck from sub-Saharan Africa. It is the smallest of Africa's waterfowl, and one of the smallest in the world. [2]
Though pygmy geese have beaks like those of geese, they are more related to the dabbling ducks and other species called 'ducks'. [3]
It is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
The African pygmy goose was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in his Histoire Naturelle des Oiseaux in 1785. [4] The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. [5] Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Anas aurita in his catalogue of the Planches Enluminées. [6] The type locality is Madagascar. [7] The current genus Nettapus was erected by the German naturalist Johann Friedrich von Brandt 1836. [8] The word Nettapus is from the Ancient Greek nētta "duck" and pous "foot". It was thought that the African pygmy goose possessed the feet and body of a duck and the neck of a goose. The specific auritus is the Latin word for "eared" or "long-eared". [9] The species is monotypic. [10]
The African pygmy goose is one of the smallest of the perching ducks, and it has the average weight of about 285 grams (10.1 oz) for males and 260 grams (9.2 oz) for females. Length of individual wings is between 142 millimetres (5.6 in) and 165 millimetres (6.5 in) (not to be confused with wingspan). [11]
They have a short bill which extends up the forehead so they superficially resemble geese.
The males have a white face with black eye patches. The iridescent black crown extends down the back of the neck. This structure fringes powder green ear patches. The upper half of the fore neck is white and forms an open collar around the neck whereas the base if the neck and breast are light chestnut colored. The flanks are more intensely chestnut colored and the back is metallic green. The sixteen tail feathers are black. The wing feathers are black with metallic green iridescence on the coverts, with the exemption of a white bar on the distal secondaries. The belly is white. The bill is yellow with a black tip and the feet are dark-gray to black. The iris of there is reddish brown. [11]
The females have a gray face with a dark brown eye stripe and smudged brown patches on the cheeks and nape. They have dark-brown a forehead, crown and back of the neck with a slight iridescence. The breast and flanks have a dark chestnut coloration. Their back is dark brown. The wing feathers are dark brown-black with the exemption of a white bar on the distal secondaries. The belly is white. The lower part of the bill is yellow, the upper part mottled brown with a dark brown tip and the feet are dark-gray to black. [11]
Ducklings have a white face with a pattern similar to that of the adult female in black and a dark gray eye patch. Their black crown extends in a V-shape from the base of the bill to the back of the neck. The rump and flanks are white, the back and tail black. Neck, breast and belly are light-gray to white the wings are black. The lower part of the bill is pink, the upper part is gray with alight brown tip and the feet are dark-gray to black. [11]
The African pygmy goose is known to be nomadic. It can be found across a wide area of sub-Saharan Africa and Madagascar. [12] It lives in habitats of slow flowing or stagnant water with a cover of water lilies (mostly inland wetlands, but also open swamps, farm dens, river pools, and estuaries). [13]
The African pygmy goose feeds mainly on the seeds of water lilies ( Nymphaea spp.) [14] but also on other floating seeds and small insects as well as other small invertebrates. [11]
They live in strong pair bonds that may last over several seasons and their breeding is triggered by rains. [11] In captivity successful breeding is rare,. [15] [16]
The cotton pygmy goose or cotton teal is a small perching duck which breeds in Asia, Southeast Asia extending south and east to Queensland where they are sometimes called white-quilled pygmy goose. They are among the smallest waterfowl in the world and are found in small to large waterbodies with good aquatic vegetation. They are usually seen in pairs or larger groups of pairs, roosting and nesting on trees near water. They are strong fliers and are known to disperse widely, especially in winter. Their breeding season coincides with the rains.
The black-headed lapwing or black-headed plover is a large lapwing, a group of largish waders in the family Charadriidae. It is a resident breeder across sub-Saharan Africa from Senegal to Ethiopia, although it has seasonal movements. It lays two or three eggs on a ground scrape.
The western plantain-eater, also known as the gray plantain-eater or western gray plantain-eater, is a large member of the turaco family, a group of large arboreal near-passerine birds restricted to Africa.
The white-naped woodpecker is woodpecker which is a widespread but a scarce breeder in the Indian Subcontinent. It is associated with open forest and scrub with some trees. It nests in a tree hole, laying one or two white eggs.
The brown booby is a large seabird of the booby family Sulidae, of which it is perhaps the most common and widespread species. It has a pantropical range, which overlaps with that of other booby species. The gregarious brown booby commutes and forages at low height over inshore waters. Flocks plunge-dive to take small fish, especially when these are driven near the surface by their predators. They only nest on the ground, and roost on solid objects rather than the water surface.
The diederik cuckoo, formerly dideric cuckoo or didric cuckoo is a member of the cuckoo order of birds, the Cuculiformes, which also includes the roadrunners and the anis.
The African pygmy kingfisher is a small insectivorous kingfisher found in the Afrotropics, mostly in woodland habitats.
The great grebe is the largest species of grebe in the world. A disjunct population exists in northwestern Peru, while the main distribution is from extreme southeastern Brazil to Patagonia and central Chile. The population from southern Chile is considered a separate subspecies, P. m. navasi.
The greater striped swallow is a large swallow that is native to Africa south of the equator.
The Karoo prinia or spotted prinia is a small passerine bird. It is a resident breeder in South Africa, Lesotho and far southern Namibia.
The Madagascar ibis, also known as the Madagascar crested ibis, white-winged ibis or crested wood ibis, is a medium-sized, brown-plumaged ibis. It has bare red orbital skin, yellow bill, red legs, white wings and its head is partially bare with a dense crest of green or gloss blue and white plumes on the nape. The Madagascar ibis is the only member of the genus Lophotibis.
The buff-necked ibis, also known as the white-throated ibis, is a fairly large ibis found widely in open habitats of eastern and northern South America. It formerly included the similar black-faced ibis as a subspecies, but that species is almost entirely restricted to colder parts of South America, has a buff lower chest, and lacks the contrasting large white wing-patches.
The rufescent tiger heron is a species of heron in the family Ardeidae. It is found in wetlands from Central America through much of South America.
The black nunbird is a species of near-passerine bird in the family Bucconidae, the puffbirds, nunlets, and nunbirds. It is found in Brazil, French Guiana, Guyana, Suriname, and Venezuela.
The violet-necked lory is a species of parrot in the family Psittaculidae. It is endemic to Indonesia, where it is found in the northern Maluku Islands and west Papuan islands. Its natural habitats are tropical moist lowland forests and tropical mangrove forests.
The violet-backed starling, also known as the plum-coloured starling or amethyst starling, is a relatively small species (17 cm) of starling in the family Sturnidae. It is the only member of the genus Cinnyricinclus. This strongly sexually dimorphic species is found widely in the woodlands and savannah forest edges of mainland sub-Saharan Africa. It is rarely seen on the ground, but instead found in trees and other locations away from the ground.
The helmeted pygmy tyrant is a species of bird in the family Tyrannidae. It is found in Brazil, Colombia, French Guiana, Guyana, Peru, Suriname, and Venezuela. Its natural habitats are subtropical or tropical moist lowland forests and heavily degraded former forest.
The red-necked woodpecker is a species of bird in subfamily Picinae of the woodpecker family Picidae. It is found in every mainland South American country except Argentina, Chile, Paraguay, and Uruguay.
The Nubian woodpecker is a species of bird in the family Picidae. It is distributed widely in Central and Eastern Africa, from Chad in west to Somalia in east and Tanzania in south. It is a fairly common species with a wide range, the population seems stable, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".
The acacia pied barbet or pied barbet is a species of bird in the family Lybiidae which is native to southern Africa.