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Difference between revisions of "Torrent Duck" - BirdForum Opus

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(Picture of nominate female. Imp sizes. Some extra info. References updated)
 
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{{incomplete}}                                                                                                   [[Category:Merganetta]]
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[[Image:Torrent Duck pareja 4.jpg|thumb|550px|right|Male right, female left, subspecies ''leucogenis''<br />Photo by {{user|Steve+Sanchez|Steve Sanchez}}<br />Aguas Calientes, Machu Picchu, Cusco, [[Peru]], November 2014]]
 
;[[:Category:Merganetta|Merganetta]] armata
 
;[[:Category:Merganetta|Merganetta]] armata
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[[Image:Torrent_Duck.jpg|thumb|550px|right|Photo by Robert Scanlon<br />Male bird Photographed in Colombia.]]
 
 
==Identification==
 
==Identification==
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43-46cm.  Small streamlined duck with rubbery red bill and long stiff tail. Male: head and neck white; crown and stripe down hindneck black; black line from eye down side of neck, rest of upperparts blackish more or less streaked tawny and gray, underparts white lightly streaked gray; green wing speculum bordered white (hard to see). Female very different: crown and hindneck blue gray, rest of upperparts like male; sides of head and entire underparts orange cinnamon.
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[[Image:TorrentDuckP1150893.jpg|thumb|350px|right|Female, nominate subspecies<br />Photo by {{user|jmorlan|jmorlan}}<br />El Ingenio, Región Metropolitana de Santiago, [[Chile]], February 2018]]
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40–46 cm (15¾-18 in)<br />
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Small streamlined duck with rubbery red bill and long stiff tail.<br />
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'''Male'''
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*White head and neck white
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*Black crown and stripe down hindneck
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*Black line from eye down side of neck
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*Rest of upperparts blackish more or less streaked tawny and gray
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*White underparts lightly streaked gray
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*Green wing [[Topography#Wings|speculum]] bordered white (hard to see).<br />
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'''Female''' very different
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*Bluish-gray crown and hindneck
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*Rest of upperparts like male
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*Sides of head and entire underparts orange cinnamon.
 
==Distribution==
 
==Distribution==
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[[Venezuela]], [[Tierra del Fuego]], [[Colombia]], [[Peru]], [[Argentina]] and [[Chile]].
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[[South America]]: found in [[Colombia]], [[Venezuela]], [[Ecuador]], [[Peru]], [[Bolivia]], [[Chile]], [[Argentina]] and [[Tierra del Fuego]].
 
==Taxonomy==
 
==Taxonomy==
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[[Image:T duck.jpg|thumb|350px|right|Female, subspecies ''colombiana''<br />Photo by {{user|nick+scarle|nick scarle}}<br />San Isidro, [[Ecuador]], August 2008]]
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====Subspecies====
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[[Image:Torrent_Duck.jpg|thumb|350px|right|Male, subspecies ''colombiana''<br />Photo by {{user|Robert+Scanlon|Robert Scanlon}}<br />[[Colombia]]]]
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There are 6 subspecies<sup>[[#References|[1]]]</sup>:
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*''M. a. colombiana'':
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:*Andes of [[Colombia]], adjacent north-western [[Venezuela]] and [[Ecuador]]
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*''M. a. leucogenis'':
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:*Andes of central and southern Ecuador and [[Peru]]
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*''M. a. turneri'':
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:*Andes of southern Peru (Cuzco and Arequipa)
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*''M. a. garleppi'':
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:*Andes of [[Bolivia]]
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*''M. a. berlepschi'':
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:*Andes of north-western [[Argentina]] and northern [[Chile]]
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*''M. a. armata'':
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:*Andes of Chile and adjacent Argentina south to Tierra del Fuego
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An additional subspecies ''fraenata'' is generally considered invalid<sup>[[#References|[2]]]</sup>.
 
==Habitat==
 
==Habitat==
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Fast flowing mountain rivers.
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Fast flowing mountain rivers. Observed at heights of 8700 ft.
 
==Behaviour==
 
==Behaviour==
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====Breeding====
 
It nests in waterside caves.
 
It nests in waterside caves.
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====Diet====
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The diet includes invertebrates.
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[[Image:Torrent Duck ducklings.jpg|thumb|350px|right|Female with 2 ducklings, subspecies ''colombiana''<br />Photo by {{user|JWN+Andrewes|JWN Andrewes}}<br />Quipucuna, Pichincha, [[Ecuador]], 1989 ]]
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Their diet consists almost entirely of aquatic invertebrates, particularly insect larvae and molluscs. They may also take some fish.
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==References==
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#{{Ref-Clements6thAug17}}#Avibase
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#Handbook of the Birds of the World Alive (retrieved Apr 2018)
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#BF Member observations
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{{ref}}
 
==External Links==
 
==External Links==
 
{{GSearch|Merganetta+armata}}
 
{{GSearch|Merganetta+armata}}
  
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[[Category:Birds]][[category:incomplete]]
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[[Category:Birds]] [[Category:Merganetta]]

Latest revision as of 21:39, 27 April 2018

Male right, female left, subspecies leucogenis
Photo by Steve Sanchez
Aguas Calientes, Machu Picchu, Cusco, Peru, November 2014
Merganetta armata

Identification

Female, nominate subspecies
Photo by jmorlan
El Ingenio, Región Metropolitana de Santiago, Chile, February 2018

40–46 cm (15¾-18 in)
Small streamlined duck with rubbery red bill and long stiff tail.
Male

  • White head and neck white
  • Black crown and stripe down hindneck
  • Black line from eye down side of neck
  • Rest of upperparts blackish more or less streaked tawny and gray
  • White underparts lightly streaked gray
  • Green wing speculum bordered white (hard to see).

Female very different

  • Bluish-gray crown and hindneck
  • Rest of upperparts like male
  • Sides of head and entire underparts orange cinnamon.

Distribution

South America: found in Colombia, Venezuela, Ecuador, Peru, Bolivia, Chile, Argentina and Tierra del Fuego.

Taxonomy

Female, subspecies colombiana
Photo by nick scarle
San Isidro, Ecuador, August 2008

Subspecies

Male, subspecies colombiana
Photo by Robert Scanlon
Colombia

There are 6 subspecies[1]:

  • M. a. colombiana:
  • M. a. leucogenis:
  • Andes of central and southern Ecuador and Peru
  • M. a. turneri:
  • Andes of southern Peru (Cuzco and Arequipa)
  • M. a. garleppi:
  • M. a. berlepschi:
  • M. a. armata:
  • Andes of Chile and adjacent Argentina south to Tierra del Fuego

An additional subspecies fraenata is generally considered invalid[2].

Habitat

Fast flowing mountain rivers. Observed at heights of 8700 ft.

Behaviour

Breeding

It nests in waterside caves.

Diet

Female with 2 ducklings, subspecies colombiana
Photo by JWN Andrewes
Quipucuna, Pichincha, Ecuador, 1989

Their diet consists almost entirely of aquatic invertebrates, particularly insect larvae and molluscs. They may also take some fish.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Handbook of the Birds of the World Alive (retrieved Apr 2018)
  4. BF Member observations

Recommended Citation

External Links

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