Southern brown kiwi Temporal range: Pleistocene-recent [1] | |
---|---|
Stewart Island tokoeka | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Infraclass: | Palaeognathae |
Order: | Apterygiformes |
Family: | Apterygidae |
Genus: | Apteryx |
Species: | A. australis |
Binomial name | |
Apteryx australis | |
Subspecies [4] | |
A. a. lawryi Rothschild, 1893 Contents | |
The distribution of southern brown kiwi | |
Synonyms | |
Apteryx lawryiRothschild, 1893 [5] |
The southern brown kiwi, tokoeka, or common kiwi [3] (Apteryx australis) is a species of kiwi from South Island of New Zealand. Until 2000 it was considered conspecific with the North Island brown kiwi, and still is by some authorities.
Apteryx australis is based on Greek and Latin. Apteryx means "A-" without "pterux" wings, and "australis" from "auster" the south wind, and "-alis" relating to. [6] The southern brown kiwi belongs to the kiwi family and it is a ratite, and a member of the order Apterygiformes. Like all ratites, its sternum has no keel, it is flightless, and it has a distinctive palate. [3]
The holotype specimen of Apteryx australis Shaw (Nat. Miscell., 24,1813, pl1057) is held in the collections of National Museums Liverpool at World Museum, with accession number NML-VZ D180. The specimen was collected by Captain Barclay at Dusky Sound, South Island, New Zealand and came to the Liverpool national collection via the 13th Earl of Derby's collection which was bequeathed to the people of Liverpool.
The southern brown kiwi is divided into two subspecies, with some conservationists arguing for a third:
A specimen described as Apteryx occidentalis in 1893 is often considered a junior synonym of Apteryx owenii , but a study in 2002 indicated this may be a hybrid between Apteryx australis and Apteryx owenii. [9]
It has no preen gland, and its feathers have no aftershafts and no barbules. There are large vibrissae around its gape, and it has no tail, only a pygostyle. It has a length of 45 to 55 cm (18–22 in) and the female weighs 2.1 to 3.9 kg (4.6–8.6 lb) and the male weighs 1.6 to 2.8 kg (3.5–6.2 lb). Its bill is long and slender with a slight down-curve. Like other kiwis it is nocturnal. The colour of its plumage is rufous with some streaking. [3]
Southern brown kiwi communicate vocally to aid in defending their territory. They will also sing duets with each other, with the male shrill "kee-wee" or "kee-kee" and the females hoarse " kurr kurr". [7] Males are more vocal and they both call in an upright position with their legs stretched out and their bill pointing up. [3]
The southern brown kiwi has a long slender bill with lateral nostrils at the tip, which helps give them their keen sense of smell. They utilise this, more than sight and sound, to forage in dirt for invertebrates, including earthworms, beetle larvae, snails, crayfish, [10] spiders, centipedes, and orthoptera, as well as eels and amphibians. [11] Its gizzard is weak, and underutilised due to the lack of plant matter. Its caeca are long and narrow and aid in digestion. [3]
The southern brown kiwi, like all kiwi, has two functioning ovaries, however only the left oviduct functions, allowing eggs from both ovaries to pass through. It is a monogamous species and once paired up, they will defend their territories with warning calls. The size of their territory is between 4.9 and 43 hectares (12 and 106 acres). Nests are made in burrows, or sheltered beneath thick vegetation. The female lays 1–2 eggs, typically just 1, which the male incubates for 90 days. After a few days the chick will exit the nest and feed on its own, although it may stay around parents for a year. When not incubating eggs, they roost alone in sheltered places at ground level. [3]
Location | Population | Date | Trend |
---|---|---|---|
Stewart Island | 20,000 | 1996 | Stable |
Fiordland | 7,000 | 1996 | Decreasing |
Haast | 300 [12] | 2008 | Increasing |
Total (New Zealand) | 27,000 | 1996 | Declining |
Southern brown kiwi live in the South Island and Stewart Island. On the mainland (South Island) they live in Fiordland and Westland. Their range is temperate and sub-tropical forests, grassland, and shrubland, the denser the better. [3] They are widespread throughout Stewart Island where they also live on the sand dunes. [8]
In 2000, after being recognised by IUCN, they were placed in the Vulnerable status group. [2] They have an occurrence range of 9,800 km2 (3,800 sq mi) and population of 27,000 was estimated in 1996. [8] Brush-tailed possums, Trichosurus vulpecula , and stoats, Mustela erminea , will eat the eggs, while stoats and cats will eat chicks and juveniles. Adults are also under threat as dogs, ferrets, and brush-tailed possums, attack them and the juveniles. The Stewart Island population is stable due to the lack of these predators, [2] however stoats may have colonised the island in 2000. [8]
In 2018 a drought caused a poor breeding season for Haast tokoeka and killed three chicks; six were airlifted to Orokonui Ecosanctuary near Dunedin, and then on to a "creche" on Rona Island in Lake Manapouri, Fiordland. [13]
Kiwi are flightless birds endemic to New Zealand of the order Apterygiformes. The five extant species fall into the family Apterygidae and genus Apteryx. Approximately the size of a domestic chicken, kiwi are the smallest ratites.
The weka, also known as the Māori hen or woodhen is a flightless bird species of the rail family. It is endemic to New Zealand. Some authorities consider it as the only extant member of the genus Gallirallus. Four subspecies are recognized but only two (northern/southern) are supported by genetic evidence.
Fiordland National Park is a national park in the south-west corner of South Island of New Zealand. It is the largest of the 13 national parks in New Zealand, with an area covering 12,607 km2 (4,868 sq mi), and a major part of the Te Wāhipounamu a UNESCO World Heritage Site established in 1990. The park is administered by the Department of Conservation. The southern ranges of the Southern Alps cover most of Fiordland National Park, combined with the deep glacier-carved valleys.
Flightless birds are birds that cannot fly. They have, through evolution, lost the ability to fly. There are over 60 extant species, including the well-known ratites and penguins. The smallest flightless bird is the Inaccessible Island rail. The largest flightless bird, which is also the largest living bird in general, is the common ostrich.
The great spotted kiwi, great grey kiwi or roroa is a species of kiwi endemic to the South Island of New Zealand. The great spotted kiwi, as a member of the ratites, is flightless. It is the largest of the kiwi. The rugged topography and harsh climate of the high altitude alpine part of its habitat render it inhospitable to a number of introduced mammalian predators, which include dogs, ferrets, cats, and stoats. Because of this, populations of this species have been less seriously affected by the predations of these invasive species compared to other kiwi. Nonetheless, there has been a 43% decline in population in the past 45 years, due to these predators and habitat destruction. This has led it to be classified as vulnerable. There are less than 16,000 great spotted kiwis in total, almost all in the more mountainous parts of northwest Nelson, the northwest coast, and the Southern Alps. A minority live on island reserves.
The little spotted kiwi or little grey kiwi is a small flightless bird in the kiwi family, Apterygidae. It is the smallest of the five kiwi species, at about 0.9 to 1.9 kg, about the size of a bantam. It is endemic to New Zealand, and in pre-European times occurred in both main islands, but is now restricted to a number of small offshore islands, and mainland reserves protected by pest-exclusion fences. The little spotted kiwi was on the brink of extinction when a conservation effort took place 100 years ago. Five individuals were translocated from the South Island of New Zealand to Kapiti Island. Today, the Kapiti Island population has grown, with around 1200 birds.
The Okarito kiwi, also known as the rowi or Okarito brown kiwi, is a member of the kiwi family Apterygidae, described as new to science in 2003. The species is part of the brown kiwi complex, and is morphologically very similar to other members of that complex. It is found in a restricted area of the Ōkārito forest on the West Coast of New Zealand's South Island, and has a population of only about 600 birds.
The North Island brown kiwi is a species of kiwi that is widespread in the northern two-thirds of the North Island of New Zealand and, with about 35,000 remaining, it is the most common kiwi species. The eggs laid by the North Island Brown Kiwi are among the largest eggs relative to its body size.
The Chilean tinamou is a type of tinamou commonly found in high elevation shrubland in subtropical regions of central Chile.
The birds of New Zealand evolved into an avifauna that included many endemic species found in no other country. As an island archipelago, New Zealand accumulated bird diversity, and when Captain James Cook arrived in the 1770s he noted that the bird song was deafening.
A. australis may refer to:
Victoria Forest Park, is situated on the West Coast of the South Island of New Zealand. At 2,069 square kilometres (799 sq mi) it is New Zealand's largest forest park. The park is administered by the Department of Conservation (DOC).
The Haast tokoeka or Haast kiwi is a putative subspecies of the southern brown kiwi. It is one of the rarest kiwi in New Zealand. Like other kiwi, this bird is flightless.
Kiwalges haastii is a species of New Zealand feather mite in the superfamily Analgoidea, known only from the great spotted kiwi, from which it derives its name.
The West Coast Wildlife Centre is a kiwi-rearing facility in Franz Josef, New Zealand. A public-private partnership with the Department of Conservation and Te Rūnunga o Makaawhio of Ngāi Tahu, it hatches eggs of the kiwi species rowi and Haast tokoeka retrieved from the wild. It rears the chicks until they are large enough for transfer to outdoor enclosures as part of Operation Nest Egg. More than 50 per cent of all living rowi were hatched at the Wildlife Centre. It is also a tourist attraction with several captive tuatara, museum displays, and tours of the rearing facility.
The Fiordland tokoeka or Fiordland kiwi is a subspecies of southern brown kiwi. It is endemic to New Zealand. Like other ratites, it is flightless.
The Stewart Island tokoeka, Stewart Island kiwi, Rakiura tokoeka or Rakiura kiwi is a subspecies of southern brown kiwi endemic to New Zealand. Like other ratites, it is a flightless bird.
The North Island little spotted kiwi or North Island little grey kiwi is an extinct subspecies of the little spotted kiwi that was native to the North Island, New Zealand. It was described by Gregory Mathews in 1935. Most subsequent authors do not recognise it or any other subspecies of Apteryx owenii.