|Individual from the feral population in São Paulo, Brazil|
The Blue-fronted Amazon (Amazona aestiva), also called the Turquoise-fronted Amazon and Blue-fronted Parrot, is a South American species of Amazon parrot and one of the most common Amazon parrots kept in captivity as a pet or companion parrot. Its common name is derived from the distinctive blue marking on its head just above its beak.
The Blue-fronted Amazon is a mainly green parrot about 38 cm (15 in) long. They have blue feathers on the forehead above the beak and yellow on the face and crown. Distribution of blue and yellow varies greatly among individuals. Unlike most other Amazona parrots, its beak is mostly black. There is no overt sexual dimorphism in plumage to the human eye, but analysis of the feathers using spectrometry, a method which allows the plumage to be seen as it would be by a parrot's tetrachromatic vision, shows clear differences between the plumage of the sexes. Juveniles of parrots are duller and have dark irises.
The Blue-fronted Amazon was one of the many species originally described by Linnaeus in his 18th century work, Systema Naturae. Its specific epithet is the feminine form of the Latin adjective aestivus, "of the summer". Two subspecies are recognised:
- A. a. aestiva (nominate) is found in eastern Brazil. The leading edge of the wing ("shoulder") is red.
- A. a. xanthopteryx occurs from northern and eastern Bolivia through adjacent parts of Brazil, to Paraguay and northern Argentina. The "shoulder" is partly or wholly yellow. Generally with more yellow to the head than nominate.
Additionally, there are significant individual variations in both facial pattern and amount of yellow/red to the "shoulder". In one extreme, individuals with essentially no yellow to the head and entirely green "shoulder" are known from north-western Argentina.
Distribution and habitat 
The range of the Blue-fronted Amazon extends over eastern and northern Bolivia, eastern Brazil, Paraguay and northern Argentina. It is found in forests (though generally avoids extensive humid forests such as the Amazon), woodland, savanna and palm groves.
The Blue-fronted Amazon nests in tree cavities. The oval eggs are white and measure around 38 x 30 mm. There are usually three to five in a clutch. The female incubates the eggs for about 27 days and the chicks leave the nest about 60 days after hatching.
The status of this species is evaluated as Least Concern by BirdLife International. However, while it remains common throughout a significant part of its range, there is evidence of a population decline, and this species has been heavily traded: Since 1981 when it was listed on CITES Appendix II, 413,505 wild-caught individuals have been recorded in international trade (UNEP-WCMC CITES Trade Database, January 2005). Unfortunately, it is regarded as a crop pest in parts of its native range.
Paradoxically, illegal trade may have contributed to expansions of the range of this parrot: It is becoming common in Rio de Janeiro, which is not a part of its historical range, something attributed to the escaping of captive individuals.
The Blue-fronted Amazon is commonly seen as a pet, both in South America and other parts of the world. Their talking ability varies greatly from individual to individual, but some speak nearly as well as the Yellow-headed Amazon group (Yellow-naped, Panama, Yellow-crowned, Double Yellow-headeds. They seem to have a proclivity for singing. They require interaction but also can play with toys contently for several hours at a time. Pets require plenty of toys, perches, and climbing room. As with some other birds, under no circumstances are Blue-fronted Amazons to eat avocado. Some individuals, particularly males, can be aggressive in spring, the mating season.
An extremely rare red (or chocolate raspberry) mutation of the species appeared in captivity in 2004, bred by the psittaculturist, Howard Voren. The mutation results in yellow plumage being replaced by that of a red/pink hue and greens with a chocolate-brown, with the depth and intensity of colour varying by location upon the body.
- Santos, Susana (2006). "Sexual Dichromatism in the Blue-fronted Amazon Parrot (Amazona aestiva) Revealed by Multiple-angle Spectrometry". Journal of Avian Medicine and Surgery 20 (1): 8–14. doi:10.1647/1082-6742(2006)20[8:SDITBA]2.0.CO;2.
- Alderton, David (2003). The Ultimate Encyclopedia of Caged and Aviary Birds. London, England: Hermes House. p. 230. ISBN 1-84309-164-X.
- (Latin) Linnaeus, C (1758). Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata. Holmiae. (Laurentii Salvii).
- Simpson DP (1979). Cassell's Latin Dictionary (5 ed.). London: Cassell Ltd. p. 883. ISBN 0-304-52257-0.
- Forshaw, p. 557
- Forshaw, p. 558
- Juniper, T., & M. Parr (1998). A Guide to the Parrots of the World. Pica Press, East Sussex. ISBN 1-873403-40-2
- Remsen, J. V., Jr., C. D. Cadena, A. Jaramillo, M. Nores, J. F. Pacheco, M. B. Robbins, T. S. Schulenberg, F. G. Stiles, D. F. Stotz, and K. J. Zimmer. Version (2008). A classification of the bird species of South America. American Ornithologists' Union. Accessed 2008-10-09.
- Areta, J. I. (2007). A green-shouldered variant of the Blue-fronted Amazon Amazona aestiva from the Sierra de Santa Bárbara, north-west Argentina. Cotinga 27: 71–73.
- as seem in the following photo
- José Felipe Monteiro Pereira (2008). Aves e Pássaros Comuns do Rio de Janeiro. Pp. 68. Technical Books, Rio de Janeiro. 2008. ISBN 978-85-61368-00-5.
- Voren, Howard. "Red Color Mutation of the Blue-fronted Amazon". Retrieved 20 May 2011.
Cited text 
- Forshaw, Joseph M. and Cooper, William T. (1978). Parrots of the World (2nd ed.). Melbourne: Landsdowne Editions. ISBN 0-7018-0690-7.
- World Parrot Trust Parrot Encyclopedia - Species Profile
- BirdLife Species Factsheet
- Animal-World.com listing
- "Amazona aestiva". Integrated Taxonomic Information System.
- Blue-fronted Amazon videos, photos & sounds on the Internet Bird Collection
- Recordings of Amazona aestiva. Xeno-canto.
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