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Difference between revisions of "Venezuelan Troupial" - BirdForum Opus

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;Icterus icterus
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;[[:Category:Icterus|Icterus]] icterus
[[Image:Troupial.jpg|thumb|550px|right|Photo by HelenB<br />Location: Aruba, Southern Caribbean]]
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[[Image:Venezuelan_Troupial_by_Digitalbcon.jpg|thumb|550px|right|Photo by {{user|Digitalbcon|Digitalbcon}}<br />Location: Bogotá, [[Colombia]], January 2008 ]]
 
==Identification==
 
==Identification==
9.75 ins (25cm). A large member of the oriole family with a black head and upper breast; orange-yellow belly and back; black tail and black wings with large white wing patches. Large pointed grey bill and grey orbital ring extending into a point behind the yellowish eye.  
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9.75 ins (25cm). A large member of the oriole family with a black head and upper breast; orange-yellow belly and back; black tail and black wings with large white wing patches. Large pointed grey bill and grey orbital ring extending into a point behind the yellowish eye. The form ''metae'' which is the isolated south-west most population of Venezuelan Troupial is showing certain features leaning towards [[Orange-backed Troupial]] such as white wing panel being broken into two parts; these features are explained with convergent evolution and not hybridization<sup>[[#References|1]]</sup>.
 
 
 
==Distribution==
 
==Distribution==
The ABC Islands (formerly the Netherlands Antilles) and Margarita Island, off Venezuela. Trinidad. Introduced to Puerto Rico, inc. Mona Is., Virgin Is. on St Thomas. Venezuela north of the Orinoco River and NE Colombia from the Guajira Peninsula to SE base of Santa Marta Mtns. and in N Arauca. S Guyana & adjacent N Brazil; SE Colombia in Putumayo & Amazonas, E Ecuador, E Peru, N, E Bolivia south to Chuquisaca, W, C Amazonian Brazil mostly south of the Amazon, east to near mouth of the lower Rio Tapajos and south to W Mato Grosso in Paraguay River drainage, W Paraguay and N Argentina in Formosa. NE brazil in Maranhao, Ceara & Pernambuco south & west to Goias, Minas Gerais and Bahia.
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The ABC Islands (formerly the Netherlands Antilles) and Margarita Island, off [[Venezuela]] as well as [[Trinidad]]. Venezuela north of the Orinoco River and NE [[Colombia]] from the Guajira Peninsula to SE base of Santa Marta Mtns. and in N Arauca. Introduced to [[Puerto Rico]], inc. Mona Is., Virgin Is. on St Thomas.  
  
 
==Taxonomy==
 
==Taxonomy==
The 3 subspecies of the Troupial have now become 3 full species, which are Venezuelan Troupial (''Icterus icterus''), with the races: ''ridgwayi, icterus'' and ''metae''; [[Orange-Backed Troupial]] (''I. croconotus'') with races ''croconotus'' and ''strictifrons''; and [[Campo Troupial]] (''I. jamaicaii'').
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The 3 forms of the Troupial have now become 3 full species, which are Venezuelan Troupial (''Icterus icterus''), with the races: ''ridgwayi, icterus'' and ''metae''; [[Orange-backed Troupial]] (''I. croconotus'') with races ''croconotus'' and ''strictifrons''; and [[Campo Troupial]] (''I. jamaicaii'')<sup>[[#References|1]]</sup>.  
The Troupial in the picture above, was photgraphed in the ABC islands (formerly the Netherlands Antilles), and is therefore the ''ridgwayi'' subspecies of the Venezuelan Troupial (''I.i.ridgwayi'').
 
See [http://www.ibispub.com/updates.html] and scroll down to the section for July 15, 2003. Page 709.
 
  
 
==Habitat==
 
==Habitat==
Mainly arid scrublands in the West Indies. Also found in parks and urban areas. Woodlands near rivers in South America.
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Mainly arid scrublands in the West Indies. Also found in parks and urban areas. Some occur in gallery forest in South America.
  
 
==Behaviour==
 
==Behaviour==
Voice: a clear whistle: ''troup, troup.... or troup-ial, troup-ial......''
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The adults breed between the months of March and September, and seek out nests of other birds. They may even ingest the eggs or young hatchlings of a newly acquired nest. 3 to 4 eggs of their own are laid and are incubated for  about two weeks.
 
 
  
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====Vocalizations====
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A clear whistle: ''troup, troup.... or troup-ial, troup-ial......''
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==References==
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# SACC [http://www.museum.lsu.edu/~remsen/SACCprop288.html discussion] accepting the split into three forms.
 
==External Links==
 
==External Links==
{{GSearch|Troupial}}
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{{GSearch|Venezuelan+icterus}}
[[Category:Birds]]
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[[Category:Birds]][[Category:Icterus]]

Latest revision as of 02:16, 26 January 2011

Icterus icterus
Photo by Digitalbcon
Location: Bogotá, Colombia, January 2008

Identification

9.75 ins (25cm). A large member of the oriole family with a black head and upper breast; orange-yellow belly and back; black tail and black wings with large white wing patches. Large pointed grey bill and grey orbital ring extending into a point behind the yellowish eye. The form metae which is the isolated south-west most population of Venezuelan Troupial is showing certain features leaning towards Orange-backed Troupial such as white wing panel being broken into two parts; these features are explained with convergent evolution and not hybridization1.

Distribution

The ABC Islands (formerly the Netherlands Antilles) and Margarita Island, off Venezuela as well as Trinidad. Venezuela north of the Orinoco River and NE Colombia from the Guajira Peninsula to SE base of Santa Marta Mtns. and in N Arauca. Introduced to Puerto Rico, inc. Mona Is., Virgin Is. on St Thomas.

Taxonomy

The 3 forms of the Troupial have now become 3 full species, which are Venezuelan Troupial (Icterus icterus), with the races: ridgwayi, icterus and metae; Orange-backed Troupial (I. croconotus) with races croconotus and strictifrons; and Campo Troupial (I. jamaicaii)1.

Habitat

Mainly arid scrublands in the West Indies. Also found in parks and urban areas. Some occur in gallery forest in South America.

Behaviour

The adults breed between the months of March and September, and seek out nests of other birds. They may even ingest the eggs or young hatchlings of a newly acquired nest. 3 to 4 eggs of their own are laid and are incubated for about two weeks.

Vocalizations

A clear whistle: troup, troup.... or troup-ial, troup-ial......

References

  1. SACC discussion accepting the split into three forms.

External Links

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