The New Zealand parrot family, Strigopidae,Nestoridae and Strigopidae are described in the same article, Bonaparte, C.L. (1849) ''Conspectus Systematis Ornithologiae''. Therefore, under rules of the

ICZN The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. It is also informally known as the ICZN Code, for its publisher, the I ...

, the first reviser determines priority, which is Bonaparte, C.L. (1850), ''Conspectus Generum Avium'', E.J. Brill, Leyden. consists of at least three

genera Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclat ...

parrots Parrots, also known as psittacines (), are birds of the roughly 398 species in 92 genus (biology), genera comprising the order (biology), order Psittaciformes (), found mostly in tropics, tropical and subtropics, subtropical regions. The order ...

– '' Nestor'', '' Strigops'', the fossil '' Nelepsittacus'', and probably the fossil ''

Heracles Heracles ( ; grc-gre, Ἡρακλῆς, , glory/fame of Hera), born Alcaeus (, ''Alkaios'') or Alcides (, ''Alkeidēs''), was a divine hero in Greek mythology, the son of Zeus and Alcmene, and the foster son of Amphitryon.By his adoptive ...

''. The genus ''Nestor'' consists of the

kea The kea (; ; ''Nestor notabilis'') is a species of large parrot in the family Nestoridae found in the forested and alpine regions of the South Island of New Zealand. About long, it is mostly olive-green with a brilliant orange under its wing ...

kākā The New Zealand kākā (''Nestor meridionalis'') is a large species of parrot of the family Nestoridae found in New Zealand's native forests. The species is often known by the abbreviated name kākā, although it shares this name with the rece ...

Norfolk kākā The Norfolk kākā (''Nestor productus'') is an extinct species of large parrot, belonging to the parrot family Nestoridae. The birds were about 38 cm long, with mostly olive-brown upperparts, (reddish-)orange cheeks and throat, straw-colou ...

and

Chatham kākā The Chatham kākā or Chatham Island kākā (''Nestor chathamensis'') is an extinct parrot species previously found on the Chatham Islands, New Zealand. The first individuals were thought to belong to the New Zealand kākā (''Nestor meridionalis' ...

, while the genus ''Strigops'' contains the iconic

kākāpō The kākāpō ( ; ; from the mi, kākāpō, , night parrot), also known as owl parrot (''Strigops habroptilus''), is a species of large, flightless, nocturnal, ground-dwelling parrots of the super-family Strigopoidea, endemic to New Zeal ...

. All extant species are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

. The species of the genus ''Nelepsittacus'' were endemics of the main islands, while the two extinct species of the genus ''Nestor'' were found at the nearby oceanic islands such as

Chatham Island Chatham Island ( ) (Moriori: ''Rēkohu'', 'Misty Sun'; mi, Wharekauri) is by far the largest island of the Chatham Islands group, in the south Pacific Ocean off the eastern coast of New Zealand's South Island. It is said to be "halfway bet ...

of New Zealand, and

Norfolk Island Norfolk Island (, ; Norfuk: ''Norf'k Ailen'') is an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia, directly east of Australia's Evans Head and about from Lord Howe Island. Together with ...

and adjacent

Phillip Island Phillip Island (Boonwurrung: ''Corriong'', ''Worne'' or ''Millowl'') is an Australian island about south-southeast of Melbourne, Victoria. The island is named after Governor Arthur Phillip, the first Governor of New South Wales, by explorer ...

. The

Norfolk kaka Norfolk () is a ceremonial and non-metropolitan county in East Anglia in England. It borders Lincolnshire to the north-west, Cambridgeshire to the west and south-west, and Suffolk to the south. Its northern and eastern boundaries are the Nort ...

and the

Chatham kaka Chatham may refer to: Places and jurisdictions Canada * Chatham Islands (British Columbia) * Chatham Sound, British Columbia * Chatham, New Brunswick, a former town, now a neighbourhood of Miramichi * Chatham (electoral district), New Brunswic ...

have become extinct in recent times, while the species of the genus ''Nelepsittacus'' have been extinct for 16 million years. All extant species, the kākāpō, kea, and the two subspecies of the kākā, are threatened. Database entry includes a range map and justification for why this species is endangered, Database entry includes a range map and justification for why this species is endangered. Database entry includes a range map and justification for why this species is endangered. Human activity caused the two extinctions and the decline of the other three species. Settlers introduced

invasive species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species ad ...

, such as

pig The pig (''Sus domesticus''), often called swine, hog, or domestic pig when distinguishing from other members of the genus '' Sus'', is an omnivorous, domesticated, even-toed, hoofed mammal. It is variously considered a subspecies of ''Sus ...

s and

possums Possum may refer to: Animals * Phalangeriformes, or possums, any of a number of arboreal marsupial species native to Australia, New Guinea, and Sulawesi ** Common brushtail possum (''Trichosurus vulpecula''), a common possum in Australian urban a ...

, which eat the eggs of ground-nesting birds, and additional declines have been caused by hunting for food, killing as agricultural pests,

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

, and introduced

wasp A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps, but are in a separate suborder. Th ...

s. The family diverged from the other parrots around 82 million years ago when New Zealand broke off from

Gondwana Gondwana () was a large landmass, often referred to as a supercontinent, that formed during the late Neoproterozoic (about 550 million years ago) and began to break up during the Jurassic period (about 180 million years ago). The final stages ...

, while the ancestors of the genera ''Nestor'' and ''Strigops'' diverged from each other between 60 and 80 million years ago.

Systematics

No consensus existed regarding the taxonomy of Psittaciformes until recently. The placement of the Strigopoidea species has been variable in the past. The family belongs to its own superfamily Strigopoidea. This superfamily is one of three superfamilies in the order Psittaciformes; the other two families are

Cacatuoidea A cockatoo is any of the 21 parrot species belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea ( true parrots) and the Strigopoidea (large New Zealand parrots), they make up the or ...

(

cockatoo A cockatoo is any of the 21 parrot species belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea (true parrots) and the Strigopoidea (large New Zealand parrots), they make up the ord ...

s) and

Psittacoidea The true parrots are about 350 species of hook-billed, mostly herbivorous birds forming the superfamily Psittacoidea, one of the three superfamilies in the biological order Psittaciformes (parrots). True parrots are widespread, with species i ...

(

true parrots The true parrots are about 350 species of hook-billed, mostly herbivorous birds forming the superfamily Psittacoidea, one of the three superfamilies in the biological order Psittaciformes (parrots). True parrots are widespread, with species in ...

).Leo Joseph, Alicia Toon, Erin E. Schirtzinger, Timothy F. Wright & Richard Schodde. (2012) A revised nomenclature and classification for family-group taxa of parrots (Psittaciformes). Zootaxa 3205: 26–40 While some taxonomists include three genera (''Nestor'', ''Nelepsittacus'', and ''Strigops'') in the family Strigopidae, others place ''Nestor'' and ''Nelepsittacus'' in the Nestoridae and retain only ''Strigops'' in the Strigopidae. Traditionally, the species of the family Strigopoidea were placed in the superfamily Psittacoidea, but several studies confirmed the unique placement of this group at the base of the parrot tree.

Phylogeography

An unproven hypothesis for the

phylogeography Phylogeography is the study of the historical processes that may be responsible for the past to present geographic distributions of genealogical lineages. This is accomplished by considering the geographic distribution of individuals in light of ge ...

of this group has been proposed, providing an example of various

speciation Speciation is the evolutionary process by which populations evolve to become distinct species. The biologist Orator F. Cook coined the term in 1906 for cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution within ...

mechanisms at work. In this scenario, ancestors of this group became isolated from the remaining parrots when New Zealand broke away from Gondwana about 82 million years ago, resulting in a physical separation of the two groups. This mechanism is called

allopatric speciation Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from ...

. Over time, ancestors of the two surviving genera, ''Nestor'' and ''Strigops'', adapted to different

ecological niche In ecology, a niche is the match of a species to a specific environmental condition. Three variants of ecological niche are described by It describes how an organism or population responds to the distribution of resources and competitors (for ...

s. This led to

reproductive isolation The mechanisms of reproductive isolation are a collection of evolutionary mechanisms, behaviors and physiological processes critical for speciation. They prevent members of different species from producing offspring, or ensure that any offspring ...

, an example of

ecological speciation Ecological speciation is a form of speciation arising from reproductive isolation that occurs due to an ecological factor that reduces or eliminates gene flow between two populations of a species. Ecological factors can include changes in the envir ...

. In the

Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58Southern Alps / Kā Tiritiri o te Moana diversified the landscape and provided new opportunities for

within the genus ''Nestor''. Around three million years ago, two lineages may have adapted to high altitude and low altitude, respectively. The high-altitude lineage gave rise to the modern kea, while the low-altitude lineage gave rise to the various kākā species. Island species diverge rapidly from mainland species once a few vagrants arrive at a suitable island. Both the Norfolk kākā and the Chatham kākā are the result of migration of a limited number of individuals to islands and subsequent adaptation to the habitat of those islands. The lack of DNA material for the Chatham kākā makes it difficult to establish precisely when those speciation events occurred. Finally, in recent times, the kākā populations at the

North Island The North Island, also officially named Te Ika-a-Māui, is one of the two main islands of New Zealand, separated from the larger but much less populous South Island by the Cook Strait. The island's area is , making it the world's 14th-largest ...

and

South Island The South Island, also officially named , is the larger of the two major islands of New Zealand in surface area, the other being the smaller but more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman ...

became isolated from each other due to the rise in sea levels when the continental

glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires dis ...

s melted at the end of the

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

. Until modern times, New Zealand and the surrounding islands were not inhabited by four-legged mammals, an environment that enabled some birds to make nests on the ground and others to be flightless without fear of predation. The parakeet species belonging to the genus ''

Cyanoramphus ''Cyanoramphus'' is a genus of parakeets native to New Zealand and islands of the southern Pacific Ocean. The New Zealand forms are often referred to as kākāriki. They are small to medium-sized parakeets with long tails and predominantly gree ...

'' (

kākāriki The three species of kākāriki (also spelled ''kakariki'', without the macrons), or New Zealand parakeets, are the most common species of parakeets in the genus ''Cyanoramphus'', family Psittacidae. The birds' Māori name, which is the most comm ...

) belong to the

true parrot The true parrots are about 350 species of hook-billed, mostly herbivorous birds forming the superfamily Psittacoidea, one of the three superfamilies in the biological order Psittaciformes (parrots). True parrots are widespread, with species in ...

family

Psittacidae The family Psittacidae or holotropical parrots is one of three families of true parrots. It comprises the roughly 10 species of subfamily Psittacinae (the Old World or Afrotropical parrots) and 157 of subfamily Arinae (the New World or Neotropi ...

and are closely related to the endemic genus ''

Eunymphicus ''Eunymphicus'' is a genus of parrots in the family Psittaculidae. The genus is endemic to New Caledonia and the Loyalty Islands, and is closely related to the ''Cyanoramphus'' parakeets of Oceania. Taxonomy The genus ''Eunymphicus'' was introd ...

'' from New Caledonia. They may have reached New Zealand between 450,000 and 625,000 years ago from mainland

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

by way of

New Caledonia ) , anthem = "" , image_map = New Caledonia on the globe (small islands magnified) (Polynesia centered).svg , map_alt = Location of New Caledonia , map_caption = Location of New Caledonia , mapsize = 290px , subdivision_type = Sovereign st ...

, but this is disputed.

Species

Very little is known about the

. The genus '' Nelepsittacus'' consists of three described and one undescribed species recovered from early Miocene deposits in Otago. The genus ''

'' consists of a giant species also described from the early Miocene of Otago.

Common names

All common names for species in this family are the same as the traditional

Māori Māori or Maori can refer to: Relating to the Māori people * Māori people of New Zealand, or members of that group * Māori language, the language of the Māori people of New Zealand * Māori culture * Cook Islanders, the Māori people of the C ...

names. The Māori word ''kākā'' derives from the ancient Proto-Polynesian word meaning parrot. ''Kākāpō'' is a logical extension of that name, as ''pō'' means night, resulting in ''kākā of the night'' or night parrot, reflecting the species' nocturnal behaviour. (In modern

orthography An orthography is a set of conventions for writing a language, including norms of spelling, hyphenation, capitalization, word breaks, emphasis, and punctuation. Most transnational languages in the modern period have a writing system, and mos ...

of the

Māori language Māori (), or ('the Māori language'), also known as ('the language'), is an Eastern Polynesian language spoken by the Māori people, the indigenous population of mainland New Zealand. Closely related to Cook Islands Māori, Tuamotuan, and ...

, the long versions of the

vowel A vowel is a syllabic speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness and also in quantity (leng ...

s '' a'' and '' o'' are written with macrons; i.e., ''ā'' and ''ō''. Note that a long ā in Maori should be pronounced like the a in English "father". The etymology of ''kea'' in Māori is less clear; it might be

onomatopoeic Onomatopoeia is the process of creating a word that phonetically imitates, resembles, or suggests the sound that it describes. Such a word itself is also called an onomatopoeia. Common onomatopoeias include animal noises such as ''oink'', ''m ...

of its ''kee-aah'' call.

Ecology

Kea (Nestor notabilis) -Mount Cook -NZ-6

The isolated location of New Zealand has made it difficult for mammals to reach the island. This is reflected in the absence of land mammals other than bats. The main predators were birds: harriers, falcons, owls, and the massive, extinct

Haast's eagle Haast's eagle (''Hieraaetus moorei'') is an extinct species of eagle that once lived in the South Island of New Zealand, commonly accepted to be the pouakai of Māori legend.evolved Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes, which are passed on from parent to offspring during reproduction. Variation ...

. This unique balance was disrupted with the arrival of the

Polynesians Polynesians form an ethnolinguistic group of closely related people who are native to Polynesia (islands in the Polynesian Triangle), an expansive region of Oceania in the Pacific Ocean. They trace their early prehistoric origins to Island Sou ...

, who introduced the

Polynesian rat The Polynesian rat, Pacific rat or little rat (''Rattus exulans''), known to the Māori as ''kiore'', is the third most widespread species of rat in the world behind the brown rat and black rat. The Polynesian rat originated in Southeast Asia, a ...

and the ''

kurī Kurī is the Māori name for the extinct Polynesian dog. It was introduced to New Zealand by the Polynesian ancestors of the Māori during their migration from East Polynesia in the 13th century AD. According to Māori tradition, the demigod ...

'' (

Polynesian dog The Polynesian Dog refers to a few extinct varieties of domesticated dogs from the islands of Polynesia. These dogs were used for both companionship and food and were introduced alongside poultry and pigs to various islands. They became extinct ...

) to the island. Later, Europeans introduced many more species, including large herbivores and mammalian predators. The three extant species of this family occupy rather different ecological niches, a result of the phylogeographical dynamics of this family. The kākāpō is a

flightless Flightless birds are birds that through evolution lost the ability to fly. There are over 60 extant species, including the well known ratites (ostriches, emu, cassowaries, rheas, and kiwi) and penguins. The smallest flightless bird is the ...

nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...

species, well

camouflage Camouflage is the use of any combination of materials, coloration, or illumination for concealment, either by making animals or objects hard to see, or by disguising them as something else. Examples include the leopard's spotted coat, the ...

d to avoid the large diurnal

birds of prey Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals, reptiles and other smaller birds). In addition to speed and strength, these predators ...

on the island, while the local owls are too small to prey on the kākāpō at night. The kākāpō is the only flightless bird in the world to use a

lek Lek or LEK may refer to: * Lek mating, mating in a lek, a type of animal territory in which males of a species gather * Albanian lek, the currency of Albania * Lek (magazine), a Norwegian softcore pornographic magazine * Lek (pharmaceutical comp ...

-breeding system. Usually, they breed only every 3–5 years when certain

podocarp Podocarpaceae is a large family of mainly Southern Hemisphere conifers, known in English as podocarps, comprising about 156 species of evergreen trees and shrubs.James E. Eckenwalder. 2009. ''Conifers of the World''. Portland, Oregon: Timber Pr ...

trees like

rimu ''Dacrydium cupressinum'', commonly known as rimu, is a large evergreen coniferous tree endemic to the forests of New Zealand. It is a member of the southern conifer group, the podocarps. The Māori name ''rimu'' comes from the Polynesian ...

(''

Dacrydium cupressinum ''Dacrydium cupressinum'', commonly known as rimu, is a large evergreen coniferous tree endemic to the forests of New Zealand. It is a member of the southern conifer group, the podocarps. The Māori name ''rimu'' comes from the Polynesian ...

'') mast abundantly. The kea is well adapted to life at high altitudes, and they are regularly observed in the snow at ski resorts. As trees are absent in the alpine zone, they breed in hollows in the ground instead of in tree hollows like most parrot species.

Relationship with humans

Importance to the Māori

The parrots were important to the Māori in various ways. They hunted them for food, kept them as pets, and used their feathers in weaving such items as their '' kahu huruhuru'' (

feather cloak Feather cloaks have been used by several cultures. Hawaii Elaborate feather cloaks called '' ʻahuʻula'' were created by early Hawaiians for the '' alii'' (royalty). Feathers were also used in women's skirts called ''pāū''. The ''iiwi ...

). Feathers were also used to decorate the head of the ''

taiaha A taiaha () is a traditional weapon of the Māori of New Zealand; a close-quarters staff weapon made from either wood or whalebone, and used for short, sharp strikes or stabbing thrusts with efficient footwork on the part of the wielder. Taiaha a ...

'', a Māori weapon, but were removed prior to battle. The skins of the kākāpō with the feathers attached were used to make cloaks (''kākahu'') and dress capes (''kahu kākāpō''), especially for the wives and daughters of chiefs. Māori like to refer to the ''kākā'' in the ''tauparapara'', the incantation to begin their ''mihi'' (tribute), because their voice (''reo'') is continuous.

Status

Of the five species, the Norfolk kākā and Chatham kākā became extinct in recent history. The last known Norfolk kākā died in captivity in London sometime after 1851, and only between seven and 20 skins survive. The Chatham kākā became extinct between 1500 and 1650 in pre-European times, after

arrived at the island, and is only known from

subfossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in ...

bones. Of the surviving species, the kākāpō is critically endangered, with only living individuals. The mainland

is listed as endangered, alongside the

Threats

The fauna of New Zealand evolved in the total absence of humans and other mammals. Only a few bat species and sea mammals were present prior to colonisation by humans, and the only predators were birds of prey that hunt by sight. These circumstances influence the design of New Zealand's parrots, for example, the flightlessness of the kākāpō and the ground breeding of the kea.

arrived at Aotearoa between 800 and 1300 AD, and introduced the ''

'' (dog) and ''kiore'' (Polynesian rat) to the islands. This was disastrous for the native fauna, because mammalian predators can locate prey by scent, and the native fauna had no defence against them. The kākāpō was hunted for its meat, skin, and plumage. When the first European settlers arrived, the kākāpō was already declining, but still widespread. The large-scale clearance of forests and bush destroyed its habitat while introduced predators such as rats, cats, and

stoat The stoat (''Mustela erminea''), also known as the Eurasian ermine, Beringian ermine and ermine, is a mustelid native to Eurasia and the northern portions of North America. Because of its wide circumpolar distribution, it is listed as Least Conc ...

s found the flightless, ground-nesting birds easy prey. The New Zealand kākā needs large tracts of forest to thrive, and the continued fragmentation of forests due to agriculture and logging has a devastating effect on this species. Another threat comes from competition with

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there ...

for food, for example with

for the endemic

mistletoe Mistletoe is the common name for obligate hemiparasitic plants in the order Santalales. They are attached to their host tree or shrub by a structure called the haustorium, through which they extract water and nutrients from the host plant. ...

and rata and with

s for shimmering honeydew, an excretion of

scale insect Scale insects are small insects of the order Hemiptera, suborder Sternorrhyncha. Of dramatically variable appearance and extreme sexual dimorphism, they comprise the infraorder Coccomorpha which is considered a more convenient grouping than the ...

s. Females, young, and eggs are particularly vulnerable in the tree hollows in which they nest. The kea nests in holes in the ground, again making it vulnerable to introduced predators. Another major threat, resulting from development of the alpine zone, is their opportunistic reliance on human food sources as their natural food sources dwindle.

Conservation

Recovery programs for the kākāpō and the kākā have been established, while the kea is also closely monitored. The living kākāpō are all in a breeding and conservation program. Each one has been individually named.

References

{{DEFAULTSORT:New Zealand Parrot Strigopoidea Birds of New Zealand Taxa named by Charles Lucien Bonaparte