1.long-tailed brilliantly colored parrot of Central America and South America; among the largest and showiest of parrots
MacawMa*caw" (?), n. [From the native name in the Antilles.] (Zoöl.) Any parrot of the genus Ara, Sittace, or Macrocercus. About eighteen species are known, all of them found in Central and South America. They are large and have a very long tail, a strong hooked bill, and a naked space around the eyes. The voice is harsh, and the colors are brilliant and strongly contrasted; they are among the largest and showiest of parrots. Different species names have been given to the same macaw, as for example the Hyacinthine macaw, which has been variously classified as Anodorhyncus hyacynthinus, Anodorhyncus maximiliani, and Macrocercus hyacynthinus.
Macaw bush (Bot.), a West Indian name for a prickly kind of nightshade (Solanum mammosum). -- Macaw palm, Macaw tree (Bot.), a tropical American palm (Acrocomia fusiformis and other species) having a prickly stem and pinnately divided leaves. Its nut yields a yellow butter, with the perfume of violets, which is used in making violet soap. Called also grugru palm.
definition of Wikipedia
Blue-and-yellow Macaw • Blue-headed Macaw • Blue-throated Macaw • Blue-winged Macaw • Chestnut-fronted Macaw • Cuban Red Macaw • Dominican Green-and-yellow Macaw • Glaucous Macaw • Golden-collared Macaw • Great Green Macaw • Hispaniolan Macaw • Hyacinth Macaw • Indigo Macaw • Indigo macaw • Jamaican Green-and-yellow Macaw • Jamaican Red Macaw • Lear's Macaw • Lesser Antillean Macaw • Little Blue Macaw • Little blue macaw • Macaw (disambiguation) • Martinique Macaw • Military Macaw • Mini-macaw • Noble macaw • Red-and-green Macaw • Red-bellied Macaw • Red-fronted Macaw • Red-shouldered Macaw • Red-tailed Blue-and-yellow Macaw • Saint Croix Macaw • Scarlet Macaw • Seven Macaw • Spix's Macaw • The Hyacinth Macaw • The Real Macaw • USS Macaw (ASR-11) • Yellow-collared Macaw
Psittaciformes; order Psittaciformes[ClasseTaxo.]
animal de compagnie (fr)[ClasseParExt.]
|A Hyacinth Macaw in the Pantanal, Mato Grosso, Brazil|
Macaws are small to large, often colourful New World parrots. Of the many different Psittacidae (true parrots) genera, six are classified as macaws: Ara, Anodorhynchus, Cyanopsitta, Primolius, Orthopsittaca, and Diopsittaca. Previously, the members of the genus Primolius were placed in Propyrrhura, but the former is correct in accordance with ICZN rules. Macaws are native to Mexico, Central America, South America, and formerly the Caribbean. Most species are associated with forests, especially rainforests, but others prefer woodland or savannah-like habitats.
Large, dark (usually black) beaks, and relatively bare, light coloured, medial (facial patch) areas distinguish macaws. Sometimes the facial patch is smaller in some species, and limited to a yellow patch around the eyes and a second patch near the base of the beak in the members of the genus Anodorhynchus, or Hyacinth Macaw. A macaw's facial feather pattern is as unique as a fingerprint.
Some of the macaw species are known for their impressive size. The largest parrot in length and wingspan is the Hyacinth Macaw. The heaviest macaw is the Buffon's, although the heaviest parrot is the flightless Kakapo. While still relatively large parrots, the macaws of the genera Cyanopsitta, Orthopsittaca and Primolius are significantly smaller than the members of Anodorhynchus and Ara. The smallest member of the family, the Red-shouldered Macaw, is no larger than some parakeets of the genus Aratinga.
There are 18 species of Macaws, including extinct and critically endangered species. In addition, there are several hypothetical extinct species that have been proposed based on very little evidence.
Several hypothetical extinct species of macaws have been postulated based on very little evidence, and they may have been subspecies, or familiar parrots that were imported onto an Island and later presumed to have a separate identity.
The majority of macaws are now endangered in the wild. Six species are already extinct, and Spix's Macaw is now considered to be extinct in the wild. The Glaucous Macaw is also probably extinct, with only two reliable records of sightings in the 20th century. The greatest problems threatening the macaw population are the rapid rate of deforestation and the illegal trapping for the bird trade.
International trade of all macaw species is regulated by the Convention on International Trade in Endangered Species of Wild Flora and Fauna (CITES). Some species of macaws—the Scarlet Macaw (Ara macao) as an example—are listed in the CITES Appendix I and may not be lawfully traded for commercial purposes. Other species, such as the Red-Shouldered Macaw (Diopsittaca nobilis), are listed in Appendix II and may legally be traded commercially provided that certain controls are in place, including a non-detriment finding, establishment of an export quota, and issuing of export permits.
A common trend in more recent years is hybridising macaws for the pet trade. Hybrids are typical macaws, with the only difference from true species being their genetics and their colours. Male offspring tend to take on the traits of the mother, and the females take the traits of the father.
Aviculturists have reported an overabundance of female blue and gold macaws in captivity, which differs from the general rule with captive macaws and other parrots, where the males are more abundant. This would explain why the blue and gold is the most commonly hybridised macaw, and why the hybridising trend took hold among macaws. Common macaw hybrids include Harlequins (Ara ararauna x Ara chloroptera), Miligold Macaw(Ara ararauna x Ara militaris) and Catalinas (known as Rainbows in Australia, Ara ararauna x Ara macao). In addition, unusual but apparently healthy intergeneric hybrids between the Hyacinth Macaw and several of the larger Ara macaws have occasionally arisen in captivity.
Macaws eat a variety of foods including fruits, palm fruits, nuts, seeds, leaves, flowers, and stems. Wild species may forage widely, over 100 km (62 mi) for some of the larger species such as Ara araurana (blue & yellow macaw) and Ara ambigua (great green macaw), in search of seasonally available foods. Some foods eaten by macaws in the wild contain toxic or caustic substances which they are able to digest. It has been suggested that parrots and macaws in the Amazon basin eat clay from exposed river banks to neutralize these toxins. In the western Amazon hundreds of macaws and other parrots descend to exposed river banks to consume clay on an almost daily basis - except on rainy days.
Donald Brightsmith, the principal investigator of the Tambopata Macaw Project, located at the Tambopata Research Center (TRC) in Peru, has studied the clay eating behavior of parrots at clay licks in Peru. He and fellow investigators found that the soils macaws choose to consume at the clay licks do not have higher levels of cation exchange capacity (ability to adsorb toxins) than that of unused areas of the clay licks and thus the parrots could not be using the clay to neutralize ingested food toxins. Rather, the macaws and other bird and animal species prefer clays with higher levels of sodium. Sodium is a vital element that is scarce in environments >100 kilometers from the ocean. The distribution of claylicks across South America further supports this hypothesis - as the largest and most species rich claylicks are found on the western side of the Amazon basin far from oceanic influences. Salt-enriched (NaCl) oceanic aerosols are the main source of environmental sodium near coasts and this decreases drastically farther inland.
Clay-eating behavior by macaws is not seen outside the western Amazon region even though macaws in these areas consume toxic foods such as the seeds of Hura crepitans, or sandbox tree, which have toxic sap. Species of parrot that consume more seeds, which potentially have more toxins, do not use claylicks more than species that eat a greater proportion of flowers or fruit in their diets.
Studies at TRC have shown a correlation between clay lick use and breeding season. Contents of nestling crop samples show a high percentage of clay fed to them by their parents. Calcium for egg development - another hypothesis - does not appear to be a reason for geophagy during this period as peak usage is after the hatching of eggs.
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