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Emerald Toucanet (Aulacorhynchus prasinus) - Wiki latin dict size=65   common dict size=512
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Subject Emerald Toucanet (Aulacorhynchus prasinus) - Wiki

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Description
Emerald Toucanet (Aulacorhynchus prasinus) - Wiki

Emerald Toucanet
From Wikipedia, the free encyclopedia

Order: Piciformes
Family: Ramphastidae

[Photo] Emerald Toucanet (Aulacorhynchus prasinus]) male in captivity eating a grape. Source: http://en.wikipedia.org/wiki/Image:Aulacorhynchus_prasinus.jpg Author: http://en.wikipedia.org/wiki/User:Demichels
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".


The Emerald Toucanet, Aulacorhynchus prasinus, is a near-passerine bird occurring in mountainous regions from Mexico, through Central America, to northern Venezuela and along the Andes as far south as central Bolivia. Some taxa currently included in this species are sometimes split into separate species (see Taxonomy).

Description
Like other toucans, the Emerald Toucanet is brightly marked and has a large bill. The adult is 30-35 cm (12-14 in) long and weighs 180 g. The sexes are alike in appearance, although the female generally is smaller and slightly short-billed. It is, as other members of the genus Aulacorhynchus, mainly green. The vent and tail-tip are rufous. The bill is black with yellow to the upper mandible (amount depends on the exact subspecies) and, in all except the nominate (prasinus) and wagleri groups (see Taxonomy), a white band at the base of the bill. The members of the caeruleogularis group have a rufous patch near the base of the upper mandible, while some members of the albivitta group have a rufous patch near the base of the lower mandible. The throat is white in the nominate and the wagleri group, blue in the caeruleogularis and cognatus group, pale grey-blue in the lautus group, blue or black in the atrogularis group, and white or grey-blue in the albivitta group. The eye-ring ranges from blue to red, in some subspecies very dark, almost appearing blackish from a distance. The legs are dull greyish and the iris is dark.

Juveniles are duller, incl. the throat, and, depending on subspecies, the black areas of the bill are replaced with dusky or the bill is entirely yellowish.

Habitat & Behavior
The Emerald Toucanet is a generally common resident breeder in humid forest and more open woodland, mainly at higher elevations. The 3???4 white eggs are laid in an unlined hole in a tree, usually an old woodpecker nest, but sometimes a natural cavity. Both sexes incubate the eggs for 14???15 days, and the chicks remain in the nest after hatching. They are blind and naked at birth, and have short bills and specialised pads on their heels to protect them from the rough floor of the nest. They are fed by both parents, and fledge after about 6 weeks. They are fed for several weeks after leaving the nest.

Small flocks, usually consisting of 5???10 birds, move through the forest in "follow-my-leader" style with a direct and rapid flight. This species is primarily an arboreal fruit-eater, but will also take insects, lizards, bird eggs, and other small prey.

The calls of the Emerald Toucanet are a loud dry rrip rrip rrip rrip rrip and a graval graval graval. It has been suggested that the two different calls are given by the two sexes. There are also croaking alarm and aggression calls.

Taxonomy
It has been suggested that this species should be split into 7 species (below described as they roughly occur from north to south):

Wagler's Toucanet (Aulacorhynchus wagleri). Endemic to south-western Mexico. Monotypic.
Emerald Toucanet (Aulacorhynchus prasinus). Found from southern Mexico to Nicaragua. Includes subspecies warneri, virescens, stenorhabdus, chiapensis and volcanius.
Blue-throated Toucanet (Aulacorhynchus caeruleogularis). Found in Costa Rica to central Panama. Incl. subspecies maxillaris.
Violet-throated or Nelson's Toucanet (Aulacorhynchus cognatus). Found in far eastern Panama and adjacent far north-western Colombia. Monotypic.
Santa Marta Toucanet (Aulacorhynchus lautus). Endemic to the Santa Marta Mountains in northern Colombia. Monotypic.
(North) Andean Toucanet (Aulacorhynchus albivitta). Found in the Andes from western Venezuela, through Colombia to northern Ecuador. Incl. subspecies griseigularis and phaeolaemus.
Black-throated or Peruvian Toucanet (Aulacorhynchus atrogularis). Found from southern Ecuador, through Peru, far western Brazil (in the state of Acre), to central Bolivia. Incl. subspecies dimidiatus and cyanolaemus.

These splits are mainly based on morphology and plumage as described by Navarro et al (2001). Their results were preliminary, as they themself pointed out. As a result most authorities, notably SACC, do not recognize more than a single widespread species, but recognize the need for a solution to this complex. They are clearly separate species as per the phylogenetic species concept, but judging the species limits as per the biological species concept is difficult due to the entirely allopatric distributions of the various groups. There are no vocal differences between the various populations, but that in itself is not unusual for separate species that do not overlap.

In Captivity
The Emerald Toucanet is a popular pet toucan. Its small size and quiet nature make it well suited for apartment living. It is affectionate when hand-fed and loves to play and interact with its owner. Emerald Toucanets are as quick to learn tricks as cockatoos. They are active and need a large cage for their size, including perches that they can hop back and forth on. They also require a high-fruit diet, without which they are susceptible to a disease of excessive iron storage that is similar to hemochromatosis in Man.

http://en.wikipedia.org/wiki/Emerald_Toucanet
The text in this page is based on the copyrighted Wikipedia article shown in above URL. It is used under the GNU Free Documentation License. You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.

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