Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Cladus: Telluraves
Cladus: Australaves
Ordo: Psittaciformes
Familia: Psittacidae
Subfamilia: Arinae
Tribus: Arini
Genus: Thectocercus
Species: Thectocercus acuticaudatus
Subspecies: T. a. acuticaudatus – T. a. haemorrhous – T. a. koenigi – T. a. neoxenus – T. a. neumanni
Name
Thectocercus acuticaudatus (Vieillot, 1818)
Synonymy
Psittacus acuticaudatus (protonym)
Aratinga acuticaudata (Vieillot, 1817)
Psittacara acuticaudatus (Vieillot, 1817)
References
Primary references
Vieillot, L.J.P. 1818. Nouveau Dictionnaire d’Histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc. Par une société de naturalistes et d'agriculteurs. Avec des figures tirées des trois règnes de la nature. ["1817"] Tome 25. 610 pp. + 7 tt. Déterville, Paris. Original description p.369 BHL Reference page.
References
Remsen, J.V., Jr., Schirtzinger, E.E., Ferraroni, A., Silveira, L.F. & Wright, T.F. 2013. DNA-sequence data require revision of the parrot genus Aratinga (Aves: Psittacidae). Zootaxa 3641(3): 296–300. DOI: 10.11646/zootaxa.3641.3.9 Full article (PDF) Reference page.
Vernacular names
Deutsch: Spitzschwanzsittich
English: Blue-crowned Parakeet
español: Aratinga cabeciazul
suomi: Sinipääaratti
português do Brasil: Aratinga-de-testa-azul
The blue-crowned parakeet, blue-crowned conure, or sharp-tailed conure (Thectocercus acuticaudatus) is a small green Neotropical parrot with a blue head and pale beak native to large parts of South America, from eastern Colombia in the north to northern Argentina in the south. They inhabit savanna-like habitats, woodland and forest margins, but avoid dense humid forest such as the Amazon.
This species is officially called a parakeet by the AOU and by birders, though usually called conures in aviculture.
Taxonomy
While T. acuticaudatus is the only species in the monotypic genus Thectocercus,[2] this species has five subspecies:[3]
Thectocercus acuticaudatus (Vieillot 1818)
Thectocercus acuticaudatus acuticaudatus (Vieillot 1818)
Thectocercus acuticaudatus haemorrhous (Spix 1824)
Thectocercus acuticaudatus koenigi (Arndt 1995)
Thectocercus acuticaudatus neoxenus (Cory 1909)
Thectocercus acuticaudatus neumanni (Blake and Traylor 1947)
Previously, this species was part of the genus Aratinga, but that genus was split in four distinct genera once various phylogenetic studies showed that the genus, as traditionally defined, was polyphyletic.[2]
Description
Pet
Pet
The blue-crowned parakeet is a medium-sized bird measuring approximately 37 cm (14.5 in) in length and weighing between 140 and 190 g (4.9 and 6.7 oz).
Blue-crowns are born with red coloring around the head, but blue-crowns are predominantly green, with dull blue coloring on the forehead, crown, cheeks, and ears in the nominate, but less blue in other subspecies. It has a ring of white featherless skin around each eye, though this is bright orange-yellow in wild T. acuticaudata neumanni.[4] The breast feathers may also be tinged with blue, though they are more commonly green to yellow-green. Closed wing coloring matches that of the body while extended wings show blue-brown, becoming chestnut on the outer flight feathers. The tail feathers are green on top, maroon to red-brown on the underside, iridescing to bright orange and scarlet under full-spectrum light. Legs are pink-brown with grey-brown claws. The upper mandible is horn-colored, tapering to a needle-sharp, grey-black tip. In the southern and western nominate and subspecies neumanni, the lower mandible is horn-colored in juveniles, fading to grey-black by the bird's second year. The remaining eastern, central and northern subspecies retain the horn-colored lower mandible throughout adulthood.
Breeding
The blue-crowned parakeet's nest is a hole in a tree. The eggs are white and there are usually three to four in a clutch. The female incubates the eggs for 26 days, and the chicks fledge from the nest about 52 days after hatching.[5]
Aviculture
Blue-crowned parakeets are generally called blue-crowned conures in aviculture. They are social birds and are relatively good talkers compared to other conures.[5] They have become quite popular as pets, with a reputation as one of the "easier" parrots to care for. However, they are also intelligent, high-energy birds that require a lot of attention and a cage with ample room and toys. They can also be quite loud at times. Consequently, they are more appropriate companions for serious bird enthusiasts rather than the casual birdkeeper.
References
BirdLife International (2012). "Psittacara acuticaudatus". IUCN Red List of Threatened Species. 2012. Retrieved 26 November 2013.
Remsen, Jr., J.V.; Schirtzinger, E.E.; Ferraroni, Anna; Silveira, Luís Fábio; & Wright, Timothy F. (24 April 2013). DNA-sequence data require revision of the parrot genus Aratinga (Aves: Psittacidae). Zootaxa 3641(3): 296–300. doi: 10.11646/zootaxa.3641.3.9
"Zoological Nomenclature Resource: Psittaciformes (Version 10.002)". www.zoonomen.net. 2010-01-12.
Ardeola: Photo of wild T. acuticaudata neumanni.
Alderton, David (2003). The Ultimate Encyclopedia of Caged and Aviary Birds. London, England: Hermes House. p. 193. ISBN 1-84309-164-X.
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