Жоғалған Spix макавының қайта оралғаны

Species of macaw that is extinct in the wild

Spix's macaw (Cyanopsitta spixii), also known as the little blue macaw, is a macaw species that was endemic to Brazil. It is a member of tribe Arini in the subfamily Arinae (Neotropical parrots), part of the family Psittacidae (the true parrots). It was first described by German naturalist Georg Marcgrave, when he was working in the State of Pernambuco, Brazil in 1638 and it is named for German naturalist Johann Baptist von Spix, who collected a specimen in 1819 on the bank of the Rio São Francisco in northeast Bahia in Brazil. This bird has been completely extirpated from its natural range, and following a several year survey, the IUCN officially declared it extinct in the wild in 2019. However, after over 20 years of conservation efforts, 200 macaws have been bred from just two parent birds, and 52 individual birds have since been reintroduced into their natural environment in June 2022. The bird is a medium size parrot weighing about , smaller than most of the large macaws. Its appearance is various shades of blue, with a grey blue head, light blue underparts, and vivid blue upperparts. Males and females are almost identical in appearance; however, the females are slightly smaller. The species inhabited riparian Caraibeira (Tabebuia aurea) woodland galleries in the drainage basin of the Rio São Francisco within the Caatinga dry forest climate of interior northeastern Brazil. It had a very restricted natural habitat due to its dependence on the tree for nesting, feeding and roosting. It feeds primarily on seeds and nuts of Caraiba and various Euphorbiaceae (spurge) shrubs, the dominant vegetation of the Caatinga. Due to deforestation in its limited range and specialized habitat, the bird was rare in the wild throughout the twentieth century. It has always been very rare in captivity, partly due to the remoteness of its natural range. It is listed on CITES Appendix I, which makes international trade prohibited except for legitimate conservation, scientific or educational purposes. The IUCN regard the Spix's macaw as extinct in the wild. Its last known stronghold in the wild was in northeastern Bahia, Brazil and sightings were very rare. After a 2000 sighting of a male bird, the next and last sighting was in 2016. The species is now maintained through a captive breeding program at several conservation organizations under the aegis of the Brazilian government. One of these organizations, the Association for the Conservation of Threatened Parrots (ACTP), moved birds back from Germany to Brazil in 2020 as part of their plan to release Spix's macaws back into the wild. The Brazilian Chico Mendes Institute for Biodiversity Conservation (ICMBio) is conducting a project Ararinha Azul with an associated plan to restore the species to the wild as soon as sufficient breeding birds and restored habitat are available.

Spix's macaw is the only known species of the genus Cyanopsitta. The genus name is derived from the Ancient Greek kuanos meaning "blue" and psittakos meaning "parrot". The species name spixii is a Latinized form of the surname "von Spix", hence Cyanopsitta spixii means "blue parrot of Spix". Spix's mistake was noticed in 1832 by German Professor of Zoology Johann Wagler, who realized that the 1819 specimen was smaller and a different colour from the hyacinth macaw and he designated the new species as "Sittace spixii". It wasn't until 1854 that naturalist Prince Charles Bonaparte properly placed it in its own genus, designating the bird Cyanopsitta spixi, based on important morphological differences between it and the other blue macaws. It was listed as Cyanopsittacus spixi by Italian zoologist Tommaso Salvadori in his 1891 Catalog of the Birds in the British Museum. Naturalists have noted the Spix's similarity to other smaller members of tribe Arini based on general morphology as long ago as Rev. F. G. Dutton, president of the Avicultural Society U. K. in 1900: "it's more like a conure" ('conure' is not a defined taxon – in Dutton's time, it referred to the archaic genus Conurus; today those would be among the smaller non macaw parakeets in Arini). Brazilian ornithologist Helmut Sick stated in 1981: "Cyanopsitta spixii is not a real macaw". (Sick's remark was in the context of an article on Lear's macaw, a larger blue macaw. He recognized, as Spix had not 150 years before, that C. spixii is notably different from the larger macaws). The morphology based taxonomy of C. spixii, intermediate between the macaws and the smaller Arini, has been confirmed by recent molecular phylogenetic studies. In a 2008 molecular phylogenetic study of 69 parrot genera, the clade diagrams indicate that C. spixii split from the ancestral parakeets before the differentiation of the modern macaws. However, not all of the macaw genera were represented in the study. The study also states that diversification of the Neotropical parrot lineages occurred starting 33 mya, a period roughly coinciding with the separation of South America from West Antarctica. The author notes that the study challenges the classification of British ornithologist Nigel Collar in the encyclopedic Handbook of the Birds of the World, volume 4 (1997). A 2011 study by the same authors which includes key genera of macaws further elucidates the macaw taxonomy: the clade diagram of that study places C. spixii in a clade including the macaw genera which is sister to a clade containing the Aratingas and other smaller parakeets. Within the macaw clade, C. spixii was the first taxon to diverge from the ancestral macaws; its nearest relatives are the red bellied macaw (Orthopsittaca manilata) and the blue headed macaw (Primolius couloni).

Spix's macaw is easy to identify being the only small blue macaw and also by the bare grey facial skin of its lores and eyerings. It is about The legs and feet are brownish black. In adults the bare facial skin is grey, the beak is entirely dark grey, and the irises are yellow.

Captive bred Spix's macaws reach sexual maturity at seven years of age. A paired female born at the Loro Parque Fundación laid eggs at the age of five years, but these were infertile. It is suspected that late maturity in captivity may be due to inbreeding or other artificial environmental factors, as other parrots of similar size reach sexual maturity in two to four years. In the wild, mating involves elaborate courtship rituals, like feeding each other and flying together. This process is known to possibly take several seasons in other large parrots, and it may also be the case for the Spix's. They make their nests in the hollows of large mature Caraibeira trees, and reuse the nest year after year. The breeding season is November to March, with most eggs hatching in January to coincide with the start of the Caatinga January to April rainy season. In the wild, Spix's were believed to lay three eggs per clutch; in captivity, the average number is four eggs, and can range from one to seven. Its lifespan in the wild is unknown; the only documented bird (the last wild male), was older than 20 years. The eldest bird in captivity died at age 34. Other ornithologists reporting the bird in various parts of the state of Piaui further extended the range to a vast area of the dry interior of northeast Brazil. Study of the lone bird discovered at Melância creek in 1990 revealed substantive information about its habitat. It had been previously assumed that the Spix's macaw had a vast range in the interior of Brazil embracing several different habitat types, including buriti palm swamps, cerrado, and dry Caatinga. But the evidence collected in Melância Creek indicated that the Spix's macaw was a specially adapted inhabitant of the disappearing woodland galleries. Much remains uncertain about the extent of the bird's original range, because most of its woodland habitat was cleared before naturalists observed either the birds or the Caraiba nesting sites. The historical range is now believed to have encompassed portions of the states of Bahia and Pernambuco in a wide corridor along a stretch of the Rio São Francisco between Juazeiro (or possibly Remanso) and Abaré. Previous observations of the birds from further west are very difficult to explain but conceivably stem from either escaped captive birds or more likely the misidentification of another species such as red bellied macaw (Orthopsittaca manilatus). There is also one confirmed site, since cleared, along Brígida Creek on the north shore of Rio São Francisco in Pernambuco. Spix's macaw is named for German naturalist Johann Baptist von Spix, who collected the first specimen in April 1819 near the São Francisco River in the vicinity of Juazeiro Recent authorities cite the type locality as Curaca, but others say the locality can't be known with certainty Spix wrote: "habitat gregarius, rarissimus licet, propre Joazeiro in campis riparüs fluminis St. Francisci, voce tenui insignis" ("it lives in flocks, although very rare, near Joazeiro in the region bordering the rio São Francisco, [and is] notable for its thin voice").) Reiser had also seen one in captivity at a railway station in Remanso. These observations resulted in an early supposition of a vast potential range for the species in the dry interior of the northeast. With the passage of the Brazil Wildlife Protection Act in 1967, Brazil forbade the export of its wildlife, and in 1975 became a party to the CITES treaty. These actions barely affected the illicit bird trade, but Spix owners were forced underground (consequently complicating the later effort to initiate a captive recovery program). The bird had not been studied in the wild until the 1970s. In 1974, Brazilian ornithologist Helmut Sick observed groups of three and four of the birds near Formosa do Rio Preta in northwest Bahia flying over buriti Palms (Mauritia flexuosa). As recently as 1980, Robert Ridgely stated that "there is no available evidence indicating a recent decline in numbers." Beginning around 1980, at the very height of the illegal bird trade, traders and trappers removed dozens of Spix's from the wild, and by the early 80s, it was generally believed to be extinct in the wild. Naturalist Dr. Paul Roth conducted field surveys of the bird in the Curacá region from 1985 to 1988. Roth found only 5 birds in 1985, three in 1986, and only two after May 1987. Two of the birds were captured for trade in 1987. A single male, paired with a female blue winged macaw, was discovered at the site in 1990. A female Spix's macaw released from captivity at the site in 1995 was killed by collision with a power line after seven weeks. The last wild male disappeared from the site in October 2000; his disappearance was thought to have marked the extinction of this species in the wild. ornithologist Nigel Collar of BirdLife International, the authority for the IUCN Redlist of birds now calls this bird extinct in the wild.

The bird was already rare by the time of Spix's discovery of it in 1819 following 100 years of intensive burning, logging and grazing of the Caatinga. Centuries of deforestation, human encroachment and agricultural development along the Rio Sao Francisco corridor following European colonization of eastern Brazil preceded its precipitous decline in the latter part of the 20th century. Naturalists surveying its known remaining native habitat in the Curaçá region have estimated that it could have supported no more than about 60 birds at any time in the last 100 years. Contributing factors were the anthropic introduction of invasive and predatory species of black rats, feral cats, mongooses and marmoset monkeys which prey on the eggs and young, and goats, sheep and cattle which destroy the regenerative growth of the woodland trees, particularly the Caraibeira seedlings. and the northward migration of the Africanized bee, which competes for nesting sites. An analysis in 2018 based on threats, time since last known confirmed records, and patterns of bird extinction suggested that the bird was in all probability extinct in the wild. As of 2019, the IUCN classifies the species as extinct in the wild. Conservationists realized that a captive breeding program would be necessary to preserve the species. At a meeting in 1987 of conservationist groups including IUCN at Loro Parque (one of the original Spix holders) in Tenerife, Canary Islands (Spain), only 17 captive Spix macaws could be located. Without the attendance of most of the captive Spix holders or involvement of the Brazilian government, little was accomplished. In 1990, the Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (IBAMA, Brazilian Institute of Environment and Renewable Natural Resources) established the Permanent Committee for the Recovery of Spix's Macaw, called CPRAA, and its Ararinha Azul project (Little Blue Macaw project) in order to conserve the species. The Permanent Committee was dissolved in 2002 due to irreconcilable differences between the parties involved. In 2004 a committee was re formed and re structured under the title of "The Working Group for the Recovery of the Spix's Macaw". In 1997, the Loro Parque Foundation returned the ownership to the Government of Brazil of all the Spix's macaws held in its facilities. Between 2000 and 2003, most of two large collections of Spix at Birds International in the Philippines and the aviaries of Swiss aviculturist Dr. Hämmerli were purchased by Sheikh Saud bin Muhammed bin Ali Al Thani of Qatar and became Al Wabra Wildlife Preservation. Under the Sheikh were instituted standards of animal keeping, veterinary care, animal husbandry and stud book records for the conservation of the Spix's. In 2007 and 2008, two farms totalling in Curaçá, State of Bahia, Brazil were purchased by the Lymington Foundation (with contributions from ACTP and Parrots International) and Al Wabra Wildlife Preservation. These compose a small but important part of the natural habitat of the Spix, in the vicinity where the last known wild Spix nest existed. Efforts to clear the habitat of introduced predators and restore the natural Caraibeira seedlings and important creek systems are ongoing on the land.

The captive population suffers from very low heterozygosity – the original wild caught founder birds were few, closely related in the wild and intensively inbred in captivity – resulting in infertility, and high rate of embryo deaths (at AWWP, only one in six eggs laid is fertile; only two thirds of those hatch). Spix's macaws choose their own mates independently, so best genetic pairings are not guaranteed. Artificially created "pairs" may groom and associate with each other as if they were a pair, but in fact are not mates, and it may take several seasons to determine this. Another complication is that infected birds cannot be paired with uninfected birds, due to risk of spreading viral diseases. Scientists from the University of Giessen of the working group of Prof. Dr. Michael Lierz, Clinic for Birds, Reptiles, Amphibians and Fish, developed a novel technique for semen collection and artificial insemination in large parrots. The research team used artificial insemination for the first time ever in the Spix's macaw at Al Wabra Wildlife Preservation in 2012. In the 2013 breeding season veterinarians and scientists from Parrot Reproduction Consulting, a German veterinary practice focused on parrot reproduction medicine, and Al Wabra developed new specific strategies for semen collection and artificial insemination of the Spix's macaw. These resulted in the world's first egg fertilisation and first chicks of the Spix's macaw as a result of assisted reproduction, performed et al Wabra Wildlife Preservation. Two chicks were produced and the first chick was called "Neumann" after Daniel Neumann, the veterinarian who performed these inseminations.

In 2018, the population of the species numbered approximately 158 individuals and an agreement was signed between the Ministry of the Environment of Brazil and conservation organizations of Belgium (Pairi Daiza Foundation) and Germany (Association for the Conservation of Threatened Parrots) to establish the repatriation of 50 Spix's macaws to Brazil by the first quarter of 2019. The Spix's macaw was eventually reintroduced to the wild in June and December of 2022. The project of reintroduction of the Spix's macaw in Brazil included the creation of two protected areas in the state of Bahia: the Wildlife Refuge of Spix's Macaw, in Curaçá, and the Environmental Protection Area of Spix's Macaw, in Juazeiro, with a awareness work done with the local population and the construction of a reproduction and readaptation center.

Between April and July 2021, three Spix's macaw were born in the Caatinga region in the state of Bahia in Brazil, twenty years after the declaration of extinction in wild by the Brazilian government. The chicks are from a couple that came from Germany in 2020. The Chico Mendes Institute for Biodiversity Conservation (ICMBio), also declared that the species will be reintroduced into nature in the next years.

One of the earliest records (and one of very few at all) of a Spix's macaw in a public zoo was a dramatic display of "the four blues" including Spix's macaw, glaucous macaw, hyacinth macaw, and the Lear's macaw in 1900 at the Berlin Zoo. The bird was exceedingly rare in aviculture, the few being held by wealthy collectors rather than privately as pets. A trickle of Spix's appeared in captivity starting in the late 1800s. The earliest known specimens were three held by the London Zoological Society between 1878 and 1902. One of the few accounts of the Spix in captivity was given by Rev. F. G. Dutton, president of the Avicultural Society U. K. in 1900: "I have not yet seen a good tempered Spix  My Spix, which is really more a Conure than a Macaw, will not look at sop of any sort, except sponge cake given from one's fingers, only drinks plain water, and lives mainly on sunflower seed. It has hemp, millet, and canary, and peanuts, but I do not think it eats much of any of them. It barks the branches of the tree in which it is loose, and may eat the bark. It would very likely be all the better if it would eat bread and milk, as it might then produce some flight feathers, which it never yet has had. But I expect it would not eat any sop, even if I gave it nothing else." The bird remained rare and highly coveted. The first captive breeding occurred in the 1950s in Brazil, in the aviaries of the late Alvaro Carvalhaes, an aviculturist from Santos. He hatched numerous chicks, some reports say as many as 24, one of which ended up at the Zoo di Napoli, where it remained alive until the late 1980s. Most of his birds died of poisoning in the 1970s. Some of these birds were the likely source of rumored Brazilian Spix owners in the 1960s and 1970s. Bates and Busenbark say that the bird was intelligent and affectionate, talked some, and had no worse proclivity for screaming than Amazons. They also noted that the Spix were spiteful to other birds. In October 2002, a Spix named Presley was discovered in Colorado, and repatriated to Brazil. This Spix had not been among those known in 1987. Because all known specimens of the Spix's macaw are now in a conservation program run by the Brazilian government, there are now no sources from which the bird may be obtained for the pet trade. Presley died on 25 June 2014 outside São Paulo, at the approximate age of 40. What appears to be the last Spix discovered in the wild was found on 18 June 2016 in Curaçá, Brazil; however, it is speculated that this may have been a bird released from captivity due to fear of the authorities.

In the animated TV series Noah's Island, the "Born to be Wild" episode focuses on Noah, the main character, bringing a breeding pair of Spix's macaws (though they don’t resemble the species in life) to his island from the Amazon rainforest, in the hope that they will breed. At first, the two macaws are both very aggressive and fight with each other, but they eventually make up and fall in love. In the opener of the Gorgo episode of Mystery Science Theater 3000, Crow finds that his head crown has become a nesting spot for two Spix's macaw eggs. Later in the episode he reveals that the eggs have been taken away by Egg Protective Services after he accidentally made an omelet in front of them. In the 2011 animated movie Rio, the main characters Blu (Jesse Eisenberg) and Jewel (Anne Hathaway) are the supposed last pair of Spix's macaws in the world (although they are referred to as blue macaws). The movie even references their extinct in the wild status and at one point ornithologist Túlio Monteiro mentions the species' scientific name. In its 2014 sequel Rio 2, it is revealed that they are not the last pair at all, but in actuality other Spix's macaws are thriving secretly in the Amazon rainforest. In a 2008 episode titled "Wildlife" of Law and Order SVU the bird was included in an international animal smuggling ring. It was found in the purse of a victim who had been mauled by a tiger. References were made to the extreme rarity of the bird and the potential value of it and other endangered species.

On 18 June 2016 one specimen was seen in Curaçá in the Brazilian state of Bahia. On 19 June, the bird was filmed in poor quality although its call was identified as a Spix's macaw. However, Birdlife noted it is possible the individual was a released captive bird.

del Hoyo, et al. (eds) (1997) Handbook of the Birds of the World, vol.4, Family Psittacidae (Parrots), N. J. Collar, pp 280 479, Lynx Edicions, Barcelona, Spain
Donald, Pain, Marsden & Collar (2010) Facing Extinction: the World's Rarest Birds and the Race to Save Them T. & A. D. Poyser