Guadeloupe amazon

Last updated

Guadeloupe amazon
Amazona.violacea.jpg
Du Tertre's 1667 illustration showing three Guadeloupe amazons (8) and one Lesser Antillean macaw (7) on a tree at the left
Status iucn3.1 EX.svg
Extinct  (c. 1779)  (IUCN 3.1) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Psittaciformes
Family: Psittacidae
Genus: Amazona
Species:
A. violacea
Binomial name
Amazona violacea
(Gmelin, 1789)
Guadeloupe in its region.svg
Location of Guadeloupe
Synonyms
List
  • Psittacus violaceusGmelin, 1788
  • Chrysotis violaceus(Rothschild, 1905)
  • Amazona violaceas(Rothschild, 1905)
  • Amazona violaceus(Rothschild, 1907)
  • Anodorhynchus purpurascens(Rothschild, 1907)

The Guadeloupe amazon or Guadeloupe parrot (Amazona violacea) is a hypothetical extinct species of parrot that is thought to have been endemic to the Lesser Antillean island region of Guadeloupe. Mentioned and described by 17th- and 18th-century writers, it received a scientific name in 1789. It was moved to the genus Amazona in 1905, and is thought to have been related to, or possibly the same as, the extant imperial amazon. A tibiotarsus and an ulna bone from the island of Marie-Galante may belong to the Guadeloupe amazon. In 1905, a species of extinct violet macaw was also claimed to have lived on Guadeloupe, but in 2015, it was suggested to have been based on a description of the Guadeloupe amazon.

Contents

According to contemporary descriptions, the head, neck and underparts of the Guadeloupe amazon were mainly violet or slate, mixed with green and black; the back was brownish green; and the wings were green, yellow and red. It had iridescent feathers, and was able to raise a "ruff" of feathers around its neck. The bird fed on fruits and nuts, and the male and female took turns sitting on the nest. It was eaten by French settlers, who also destroyed its habitat. Rare by 1779, it appears to have become extinct by the end of the 18th century.

Taxonomy

The Guadeloupe amazon was first described in 1664 by the French botanist Jean-Baptiste Du Tertre, who also wrote about and illustrated the bird in 1667. The French clergyman Jean-Baptiste Labat described the bird in 1742, and it was mentioned in later natural history works by writers such as Mathurin Jacques Brisson, Comte de Buffon, and John Latham; the latter gave it the name "ruff-necked parrot". German naturalist Johann Friedrich Gmelin coined the scientific name Psittacus violaceus for the bird in his 1789 edition of Systema Naturae , based on the writings of Du Tertre, Brisson, and Buffon. [2] [3] [4] The specific name violaceus means "violet". [5]

The imperial amazon of Dominica is possibly related or may be the same species. Amazona imperialis -Roseau -Dominica -aviary-6a-3c.jpg
The imperial amazon of Dominica is possibly related or may be the same species.

In 1891, the Italian zoologist Tommaso Salvadori included Psittacus violaceus in a list of synonyms of the red-fan parrot (Deroptyus accipitrinus), a South American species. In 1905, the American zoologist Austin Hobart Clark pointed out that the colouration of the two species was dissimilar (their main similarity being a frill on the neck), and that Buffon stated that the parrot of Guadeloupe was not found in Cayenne where the red-fan parrot lives. Clark instead suggested that the Guadeloupe species was most closely related to the extant, similarly coloured imperial amazon (Amazona imperialis) of Dominica. He therefore placed the Guadeloupe bird in the same genus, with the new combination Amazona violacea, and referred to it by the common name "Guadeloupe parrot". [2] [6] The name Amazona comes from the French word "Amazone", which Buffon had used to refer to parrots from the Amazonian rainforest. [7] In 1967, the American ornithologist James Greenway suggested that the amazon of Guadeloupe may have formed a superspecies with the imperial amazon and the extinct Martinique amazon (Amazona martinicana), and was perhaps a subspecies of the former. He considered it a hypothetical extinct species since it was only known from old accounts. [8]

In 2001, the American ornithologists Matthew Williams and David Steadman argued in favor of the idea that the early accounts were a solid basis for the Guadeloupe amazon's existence. They also reported a tibiotarsus bone found on the Folle Anse archaeological site on Marie-Galante, an island in the Guadeloupe region, which they found similar to that of the imperial amazon, but slightly shorter. Since Marie-Galante shares many modern bird species with Guadeloupe, they suggested that the bone belonged to the Guadeloupe amazon, and assigned it to A. cf. violacea (which implies the classification is uncertain). [9] In 2004, Patricia Ottens-Wainright and colleagues pointed out that the early descriptions of the Guadeloupe amazon did not clearly determine whether it was a unique species or the same species as the imperial amazon. [10] Ornithologists Storrs Olson and Edgar Maíz, writing in 2008, felt that the Guadeloupe amazon was probably the same as the imperial amazon. [11] In contrast the English ornithologist Julian P. Hume wrote in 2012 that though the amazon species of Guadeloupe and Martinique were based on accounts rather than physical remains, he found it likely they once existed, having been mentioned by trusted observers, and on zoogeographical grounds. [4] In 2015, the ecologists Monica Gala and Arnaud Lenoble stated that an ulna bone from Marie-Galante, which had been assigned to the extinct Lesser Antillean macaw (Ara guadeloupensis) by Williams and Steadman in 2001 and to the imperial amazon by Olson and Maiz in 2008, instead belonged to the Guadeloupe amazon. [12] [11]

The "violet macaw"

1907 illustration of the "violet macaw" by Keulemans Anodorhynchus purpurascens Keulemans.jpg
1907 illustration of the "violet macaw" by Keulemans

In 1905, the British banker and zoologist Walter Rothschild named Anodorhynchus purpurascens, based on an old description of a deep violet parrot seen on Guadeloupe, found in an 1838 publication by a "Don de Navaret". He interpreted it as an extinct Anodorhynchus macaw due to its entirely blue colouration, and said the native Caribs called it "onécouli". [13] [14] [15] Greenway suggested this "mythical macaw" may have been based on a careless description of the Guadeloupe amazon, or possibly an imported Lear's macaw (Anodorhynchus leari) from South America. He was unable to check the reference given by Rothschild, but suggested it may have been a publication by the Spanish historian Martín Fernández de Navarrete. [8]

In 2000, the English writer Errol Fuller suggested the bird may have been an imported hyacinth macaw (Anodorhynchus hyacinthinus). [16] In 2001, Williams and Steadman were also unable to find the reference listed by Rothschild, and concluded that the supposed species required further corroboration. [9] The biologists James W. Wiley and Guy M. Kirwan were also unable to find the reference to the violet macaw in 2013, but pointed out an account by the Italian historian Peter Martyr d'Anghiera, who described how the Spanish took parrots that were mainly purple from Guadeloupe during the second voyage of Christopher Columbus. [17] [18]

In 2015, Lenoble reviewed overlooked historical Spanish and French texts, and identified the sources on which Rothschild had based the violet macaw. An 1828 publication by de Navarrete mentioned parrots on Guadeloupe during the second voyage of Columbus, but did not state their colour or include the term "onécouli". Lenoble instead pointed to a Carib-French dictionary by the French missionary Raymond Breton (who was on Guadeloupe from 1635 to 1654) which included terms for parrots, and the passage "onicoali is the Guadeloupe variety, which differs from the others being larger and violet, with red-lined wings". Lenoble concluded that this referred to the Guadeloupe amazon since Breton appears to have reserved the word parrot for birds smaller than macaws, and due to the consistent plumage pattern mentioned. Lenoble recognised all the elements of Rothschild's description in Breton's text, but suggested that Rothschild must have relied on a secondary source since he spelled the name differently. This source appears to have been a footnote in an 1866 article, which quoted Breton, but gave an incorrect citation. It used a francised version of the bird's name ("onécouli"), and implied it could have been a macaw. Lenoble therefore concluded that the supposed "violet macaw" was based on misidentified references to the Guadeloupe amazon, and that the Lesser Antillean macaw was the only macaw species that lived on Guadeloupe. [18] [19]

Description

Hypothetical illustration of the Guadeloupe amazon by Keulemans, 1907 Amazona violacea.png
Hypothetical illustration of the Guadeloupe amazon by Keulemans, 1907

Du Tertre described the Guadeloupe amazon as follows in 1654:

The Parrot of Guadeloupe is almost as large as a fowl. The beak and the eye are bordered with carnation. All the feathers of the head, neck, and underparts are of a violet color, mixed with a little green and black, and changeable like the throat of a pigeon. All the upper part of the back is brownish green. The long quills are black, the others yellow, green, and red, and it has on the wing-coverts two rosettes of rose color. [2]

Labat described the bird as follows in 1742:

The Parrots of these islands are distinguishable from those of the mainland of Guinea (? Guiana) by their different plumage; those of Guadeloupe are a little smaller than the Macaws. The head, neck, and underparts are slaty, with a few green and black feathers; the back is wholly green, the wings green, yellow, and red. [2]

Clark noted that the iridescent feathers described are not unique to the Guadeloupe amazon, as other freshly killed amazons also show this to a greater or lesser degree, especially the Saint Vincent amazon (Amazona guildingii). He suggested that the black of the head and underparts of the Guadeloupe bird could have been the borders of the feathers, as seen in the imperial amazon, whereas the green may have been a sign of immaturity, like in the Saint Vincent amazon. He also likened the brownish green upperparts to those of a young Saint Vincent amazon, and suggested that the red "rosettes" mentioned by Du Tertre may have been scattered feathers in the wing covert feathers. Clark listed features of the imperial amazon which contrasted with those of the Guadeloupe amazon, such as its deep purple head and underparts, green upperparts, wings with dark brown, purple, green, blue and red feathers. [2]

As well as being described as violet by Du Tertre and slate by Labat, the head and underparts of the bird were described as ashy blue by Brisson. Greenway suggested some of this discrepancy may have been because Labat confused the Guadeloupe amazon with the Martinique amazon, as he appears not to have distinguished between the birds. Hume consolidated these descriptions under the term "slaty-blue". [2] [8] [4]

Rothschild featured an illustration of the Guadeloupe amazon in his 1907 book Extinct Birds by the Dutch artist John Gerrard Keulemans, based on the early descriptions. [15] In 1916, the American ornithologist Robert Ridgway criticised the illustration for differing from Du Tertre's description; Du Tertre supposedly only meant that the proximal primary feathers were yellow, whereas all the covert feathers are yellow in the illustration, apart from a red edge, and the head and underparts are slate. [20]

Behaviour and ecology

Labat's 1722 illustration of a Guadeloupe amazon and Guadeloupe parakeet above, and a Lesser Antillean macaw Guadeloupe Psittaciformes.Labat.jpg
Labat's 1722 illustration of a Guadeloupe amazon and Guadeloupe parakeet above, and a Lesser Antillean macaw

In 1664 Du Tertre described some behavioural traits of the Guadeloupe amazon, and listed items among its diet:

When it erects the feathers of its neck, it makes a beautiful ruff about its head, which it seems to admire, as a peacock its tail. It has a strong voice, talks very distinctly, and learns quickly if taken young. It lives on the wild fruits which grow in the forests, except that it does not eat the manchioneel. Cotton seed intoxicates it, and affects it as wine does a man; and for that reason they eat it with great eagerness ... The flavor of its flesh is excellent, but changeable, according to the kind of food. If it eats cashew nuts, the flesh has an agreeable flavor of garlic; if 'bois des inde' it has a flavor of cloves and cinnamon; if on bitter fruits, it becomes bitter like gall. If it feeds on genips, the flesh becomes wholly black, but that does not prevent its having a very fine flavor. When it feeds on guavas it is at its best, and then the French commit great havoc among them. [2]

Clark noted that the Saint Vincent amazon and other amazon species can also raise a "ruff" of feathers around their neck when excited. [2]

In 1667, Du Tertre repeated his description of the Guadeloupe amazon, and added some details about its breeding behaviour:

We had two which built their nest a hundred paces from our house in a large tree. The male and the female sat alternately, and came one after the other to feed at the house, where they brought their young when they were large enough to leave the nest. [2]

Extinction

In 1779, Buffon stated that the Guadeloupe amazon had become very rare, and indicated why it may have become extinct: [4]

We have never seen this parrot, and it is not found in Cayenne. It is even very rare in Guadeloupe today, for none of the inhabitants of that island have given us any information concerning it; but that is not extraordinary, for since the islands have been inhabited, the number of parrots has greatly diminished, and Dutertre remarks in particular of this one that the French colonists wage a terrible war on it in the season when it is especially fat and succulent. [2]

Greenway suggested that both the French settlers and their slaves ate the Guadeloupe amazon as well as destroyed its habitat. The supposedly related imperial amazon survives in the steep mountain forests of Dominica. Guadeloupe is less mountainous than Dominica, more suitable for farming and, historically, has had a larger human population. Because of this, there would have been a greater pressure on the Guadeloupe amazon and it appears to have become extinct by the end of the 18th century. All the amazon species still extant on the West Indian islands are endangered, since they are trapped for the pet-trade and overhunted for food, and also because of destruction of their habitat. [4] [8]

Related Research Articles

<span class="mw-page-title-main">Macaw</span> Bird of the parrot family

Macaws are a group of New World parrots that are long-tailed and often colorful. They are popular in aviculture or as companion parrots, although there are conservation concerns about several species in the wild.

<i>Anodorhynchus</i> Genus of birds

Anodorhynchus is a genus of large blue macaws from open and semi-open habitats in central and eastern South America. It includes two extant species, the hyacinth macaw and Lear's macaw also known as the indigo macaw, and one probably extinct species, the glaucous macaw. At about 100 centimetres (39 in) in length the hyacinth macaw is the longest parrot in the world. Glaucous and Lear's macaws are exclusively cliff nesters; hyacinth macaws are mostly tree nesters. The three species mainly feed on the nuts from a few species of palms.

<span class="mw-page-title-main">Hyacinth macaw</span> Species of bird (parrot)

The hyacinth macaw, or hyacinthine macaw, is a parrot native to central and eastern South America. With a length of about one meter it is longer than any other species of parrot. It is the largest macaw and the largest flying parrot species; the flightless kākāpō of New Zealand outweighs it at up to 3.5 kg. While generally easily recognized, it could be confused with the smaller Lear's macaw. Habitat loss and the trapping of wild birds for the pet trade have taken a heavy toll on their population in the wild, so the species is classified as Vulnerable on the International Union for Conservation of Nature's Red List, and it is protected by its listing on Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).

<span class="mw-page-title-main">Red-necked amazon</span> Species of bird

The red-necked amazon, also known as the red-necked parrot, Dominican blue-faced amazon, lesser Dominican amazon, and jaco parrot or jaco, is an amazon parrot endemic to Dominica.

<span class="mw-page-title-main">Black-billed amazon</span> Species of bird

The black-billed amazon is a parrot endemic to Jamaica. Sometimes called the black-billed parrot, this amazon parrot is mostly green with small patches of red on the wing and sometimes flecked on the head. Its bill makes it easy to separate from most other amazons, including the yellow-billed amazon, which also lives in Jamaica. It is the smallest Amazona parrot at 25 cm (10 in).

<span class="mw-page-title-main">Southern mealy amazon</span> Species of bird

The southern mealy amazon or southern mealy parrot is among the largest parrots in the genus Amazona, the amazon parrots. It is a mainly green parrot with a total length of 38–41 cm (15–16 in). It is native to tropical Central and South America. This parrot and the northern mealy amazon are considered conspecific.

<span class="mw-page-title-main">Broad-billed parrot</span> Extinct parrot endemic to Mauritius

The broad-billed parrot or raven parrot is a large extinct parrot in the family Psittaculidae. It was endemic to the Mascarene island of Mauritius. The species was first referred to as the "Indian raven" in Dutch ships' journals from 1598 onwards. Only a few brief contemporary descriptions and three depictions are known. It was first scientifically described from a subfossil mandible in 1866, but this was not linked to the old accounts until the rediscovery of a detailed 1601 sketch that matched both the subfossils and the accounts. It is unclear what other species it was most closely related to, but it has been classified as a member of the tribe Psittaculini, along with other Mascarene parrots. It had similarities with the Rodrigues parrot, and may have been closely related.

<i>Ara</i> (bird) Neotropical genus of macaws

Ara is a Neotropical genus of macaws with eight extant species and at least two extinct species. The genus name was coined by French naturalist Bernard Germain de Lacépède in 1799. It gives its name to and is part of the Arini, or tribe of Neotropical parrots. The genus name Ara is derived from the Tupi word ará, an onomatopoeia of the sound a macaw makes.

<span class="mw-page-title-main">St. Croix macaw</span> Species of extinct macaw

The St. Croix macaw or Puerto Rican macaw is an extinct species of macaw whose remains have been found on the Caribbean islands of St. Croix and Puerto Rico. It was described in 1937 based on a tibiotarsus leg bone unearthed from a kitchen midden at a pre-Columbian site on St. Croix. A second specimen consisting of various bones from a similar site on Puerto Rico was described in 2008, while a coracoid from Montserrat may belong to this or another extinct species of macaw. The St. Croix macaw is one of 13 extinct macaw species that have been proposed to have lived on the Caribbean islands. Macaws were frequently transported long distances by humans in prehistoric and historical times, so it is impossible to know whether species known only from bones or accounts were native or imported.

<span class="mw-page-title-main">Imperial amazon</span> Species of rare bird in the Caribbean

The imperial amazon or Dominican amazon, also known as the sisserou or sisserou parrot, is a parrot found only on the Caribbean island of Dominica. It has been designated as the national bird of Dominica. The species is critically endangered. In 2019, it was estimated there were only about 50 mature individuals left in the wild.

<span class="mw-page-title-main">Cuban macaw</span> Extinct species of macaw native to Cuba

The Cuban macaw or Cuban red macaw is an extinct species of macaw native to the main island of Cuba and the nearby Isla de la Juventud. It became extinct in the late 19th century. Its relationship with other macaws in its genus was long uncertain, but it was thought to have been closely related to the scarlet macaw, which has some similarities in appearance. It may also have been closely related, or identical, to the hypothetical Jamaican red macaw. A 2018 DNA study found that it was the sister species of two red and two green species of extant macaws.

<span class="mw-page-title-main">Lesser Antillean macaw</span> Extinct bird from the Caribbean

The Lesser Antillean macaw or Guadeloupe macaw is a hypothetical extinct species of macaw that is thought to have been endemic to the Lesser Antillean island region of Guadeloupe. In spite of the absence of conserved specimens, many details about the Lesser Antillean macaw are known from several contemporary accounts, and the bird is the subject of some illustrations. Austin Hobart Clark described the species on the basis of these accounts in 1905. Due to the lack of physical remains, and the possibility that sightings were of macaws from the South American mainland, doubts have been raised about the existence of this species. A phalanx bone from the island of Marie-Galante confirmed the existence of a similar-sized macaw inhabiting the region prior to the arrival of humans and was correlated with the Lesser Antillean macaw in 2015. Later that year, historical sources distinguishing between the red macaws of Guadeloupe and the scarlet macaw of the mainland were identified, further supporting its validity.

<span class="mw-page-title-main">Yellow-billed amazon</span> Species of bird

The yellow-billed amazon, also called the yellow-billed parrot or Jamaican amazon, is a species of parrot in the family Psittacidae. It is a predominantly green parrot with a short tail and pink throat and neck. It is endemic to Jamaica, where its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, subtropical or tropical moist montane forests, plantations, and rural gardens. It is threatened by habitat loss and illegal trapping of wild birds for the pet trade.

<span class="mw-page-title-main">Martinique amazon</span> Hypothetical species of bird

The Martinique amazon is a hypothetical extinct species of Caribbean parrot in the family Psittacidae. It is not known from any material remains, but was said to be similar to the red-necked amazon from Dominica, the next major island to the north of Martinique. Natives are known to have traded extensively in parrots between the Antilles, and it seems that the Martinique population was in some way related to or even descended from A. arausiaca.

<span class="mw-page-title-main">Red-headed macaw</span> Species of bird

The red-headed macaw or Jamaican green-and-yellow macaw may have been a species of parrot in the family Psittacidae that lived in Jamaica, but its existence is hypothetical.

<span class="mw-page-title-main">Guadeloupe parakeet</span> Extinct species of bird

The Guadeloupe parakeet is a hypothetical species of parrot that would have been endemic to Guadeloupe.

<span class="mw-page-title-main">Martinique macaw</span> Extinct species of bird

The Martinique macaw or orange-bellied macaw is a hypothetical extinct species of macaw which may have been endemic to the Lesser Antillean island of Martinique, in the eastern Caribbean Sea. It was scientifically named by Walter Rothschild in 1905, based on a 1630s description of "blue and orange-yellow" macaws by Jacques Bouton. No other evidence of its existence is known, but it may have been identified in contemporary artwork. Some writers have suggested that the birds observed were actually blue-and-yellow macaws. The "red-tailed blue-and-yellow macaw", another species named by Rothschild in 1907 based on a 1658 account, is thought to be identical to the Martinique macaw, if either one ever existed.

<span class="mw-page-title-main">Mealy amazon</span> Species of bird

The mealy amazon or mealy parrot is among the largest parrots in the genus Amazona, the amazon parrots. It is a mainly green parrot with a total length of 38–41 cm (15–16 in). It is native to tropical Central and South America. This species, the southern mealy amazon, the northern mealy amazon are considered conspecific.

References

  1. BirdLife International (2016). "Amazona violacea". IUCN Red List of Threatened Species . 2016: e.T22728701A94994037. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22728701A94994037.en . Retrieved 13 November 2021.
  2. 1 2 3 4 5 6 7 8 9 10 Clark, A. H. (1905). "The West Indian parrots". The Auk . 22 (4): 337–344. doi:10.2307/4069996. JSTOR   4069996.
  3. Latham, J. (1821). A General History of Birds. Vol. 4. London: Jacob & Johnson. p. 217. doi:10.5962/bhl.title.62572.
  4. 1 2 3 4 5 Hume, J. P.; Walters, M. (2012). Extinct Birds. London: A & C Black. pp. 338–339, 399. ISBN   978-1-4081-5725-1.
  5. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names [electronic resource]: from AALGE to ZUSII. London: Christopher Helm. p. 402. ISBN   978-1408133262.
  6. Salvadori, T. (1891). Catalogue of the Birds in the British Museum. London: Taylor & Francis. p. 336. doi:10.5962/bhl.title.8233.
  7. Jobling, J. A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p.  44. ISBN   978-1-4081-2501-4.
  8. 1 2 3 4 Greenway, J. C. (1967). Extinct and Vanishing Birds of the World. New York: American Committee for International Wild Life Protection. pp. 9, 320, 328–330. ISBN   978-0-486-21869-4.
  9. 1 2 Williams, M. I.; Steadman, D. W. (2001). "The historic and prehistoric distribution of parrots (Psittacidae) in the West Indies". In Woods, C. A.; Florence E. Sergile (eds.). Biogeography of the West Indies: Patterns and Perspectives (PDF) (2nd ed.). Florida: CRC Press. pp. 175–189. ISBN   978-0-8493-2001-9. Archived from the original (PDF) on 2014-02-07.
  10. Ottens-Wainright, P.; Halanych, K. M.; Eberhard, J. R.; Burke, R. I.; Wiley, J. W.; Gnam, R. S.; Aguilera, X. G. (2004). "Independent geographic origin of the genus Amazona in the West Indies". Journal of Caribbean Ornithology. 17: 23–49.
  11. 1 2 Olson, S. L.; Máiz López, E. J. (2008). "New evidence of Ara autochthones from an archeological site in Puerto Rico: a valid species of West Indian macaw of unknown geographical origin (Aves: Psittacidae)". Caribbean Journal of Science. 44 (2): 215–222. doi:10.18475/cjos.v44i2.a9. S2CID   54593515.
  12. Gala, M.; Lenoble, A. (2015). "Evidence of the former existence of an endemic macaw in Guadeloupe, Lesser Antilles". Journal of Ornithology. 156 (4): 1061. doi:10.1007/s10336-015-1221-6. S2CID   18597644.
  13. Rothschild, W. (1905). "Notes on extinct parrots from the West Indies". Bulletin of the British Ornithologists' Club. 16: 13–15.
  14. Rothschild, W. (1905). "On extinct and vanishing birds". Ornis (Proceedings of the 4th International Ornithological Congress, London). 14: 191–217.
  15. 1 2 Rothschild, W. (1907). Extinct Birds. London: Hutchinson & Co. pp. 55–57.
  16. Fuller, E. (2000). Extinct Birds. Oxford University Press. p. 233. ISBN   978-0-670-81787-0.
  17. Wiley, J. W.; Kirwan, G. M. (2013). "The extinct macaws of the West Indies, with special reference to Cuban Macaw Ara tricolor". Bulletin of the British Ornithologists' Club. 133: 125–156.
  18. 1 2 Lenoble, A. (2015). "The Violet Macaw (Anodorhynchus purpurascens Rothschild, 1905) did not exist". Journal of Caribbean Ornithology. 28: 17–21.
  19. Breton, R. (1978). Relations de l'île de la Guadeloupe (in French). Basse-Terre, Guadeloupe: Société d’Histoire de la Guadeloupe. p. 34. ISBN   978-2-900339-13-8.
  20. Ridgway, R.; Friedmann, H. (1916). The Birds of North and Middle America. Washington, DC, US: Smithsonian Institution. p. 224. LCCN   11035036.