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Difference between revisions of "Sedge Wren" - BirdForum Opus

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(→‎References: Updated Clements & added 6 references to prepare for revised taxonomy.)
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The diet includes insects and spiders.
 
The diet includes insects and spiders.
 
==References==
 
==References==
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#{{Ref-Clements6thAug13}}
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#{{Ref-Clements6thAug17}}#Herkert, J. R., D. E. Kroodsma, and J. P. Gibbs (2001). Sedge Wren (''Cistothorus platensis''), version 2.0. In The Birds of North America (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.582
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#Jaramillo, A. (2014) Sedge Wren Shakeup!! (retrieved from http://alvarosadventures.com/sedge-wren-shakeup/ on 24 May 2018)
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#Kroodsma, D., Brewer, D., Marks, J.S. & Kirwan, G.M. (2018). Grass Wren (''Cistothorus platensis''). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58115 on 23 May 2018)
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#Remsen, J. V., Jr., J. I. Areta, C. D. Cadena, S. Claramunt, A. Jaramillo, J. F. Pacheco, M. B. Robbins, F. G. Stiles, D. F. Stotz, and K. J. Zimmer. Version [May 2018]. A classification of the bird species of South America. American Ornithologists' Union. http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm
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#Robbins, M.B. & Nyári, Á.S. (2014) Canada to Tierra del Fuego: species limits and historical biogeography of the Sedge Wren (''Cistothorus platensis''). Wilson J. Orn. 126(4): 649–662.
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#Traylor, M. A. 1988. Geographic variation and evolution in South American ''Cistothorus platensis'' (Aves: Troglodytidae). [https://archive.org/details/geographicvariat48tray Fieldiana Zool. no. 48:1-35.]
 
{{ref}}
 
{{ref}}
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==External Links==
 
==External Links==
 
{{GSearch|Cistothorus+platensis}}
 
{{GSearch|Cistothorus+platensis}}
  
 
[[Category:Birds]] [[Category:Cistothorus]]
 
[[Category:Birds]] [[Category:Cistothorus]]

Revision as of 07:36, 24 May 2018

Bird likely belonging to the stellaris group
Photo by mcdomik
Pheasant Branch Conservancy Middleton, WI, USA
Cistothorus platensis

Includes: Grass Wren

Identification

10-12cm
Brown upperparts, light brown belly and flanks, white throat and breast. The back has pale streaks. Dark cap with pale streaks, a faint line over the eye and a short thin bill. Sexes alike. Very hard to see, much easier to locate by sound.

Distribution

Bird likely belonging to the polyglottus group
Photo by Ecuadorrebel
Cotopaxi, Ecuador, September 2010

USA and Canada: Main breeding range in the U.S. from North Dakota and southern Manitoba east to southwestern Ontario and Michigan south to eastern Nebraska east to Indiana. Localized in Ohio, New York, Vermont and New Jersey. Winters in eastern Texas, Arkansas, Louisiana, and Florida.
Central America: from Mexico to western Panama.
South America: In the north limited to mountain ranges, but in the southern cone more widespread; also found in the Falkland Islands.

Taxonomy

There are numerous subspecies. These can be devided into two main groups which sometimes are considered as separate species: The Sedge Wren (Cistothorus stellaris) from North America and the Grass Wren (Cistothorus platensis) from South America.

Subspecies

Alternatively[1], the species can be divided into several subgroups which require additional research: stellaris from USA and Canada, the Middle America group from Mexico to western Panama, the polyglottus group from the Andes and other mountains in northern South America, the platensis group of Argentina and Chile, and the falklandicus group from the Falkland Islands.

Bird likely belonging to the falklandicus group.
Photo by crispash
Near Lighthouse, Stanley, Falkland Islands, March 2005
Click on image to see larger version

Tinnulus Group (Middle America)

  • C. p. tinnulus: Western Mexico (Nayarit to Michoacán, México and Distrito Federal)
  • C. p. potosinus: North-central Mexico (San Luis Potosí)
  • C. p. jalapensis: Eastern Mexico (interior central Veracruz to Orizaba region)
  • C. p. warneri: Tropical southern Mexico (Veracruz, Tabasco and western Chiapas)
  • C. p. elegans: South-central Guatemala
  • C. p. russelli: Pine ridge region of Belize
  • C. p. graberi: Eastern Honduras to north-eastern Nicaragua
  • C. p. lucidus: Subtropical central Costa Rica to western Panama (Chiriquí)

Polyglottus Group

  • C. p. alticola: Mountains of northern Colombia to northern Venezuela; southern Guyana
  • C. p. aequatorialis: Central and Western Andes of southern Colombia and Ecuador
  • C. p. graminicola: Andes from southern Ecuador south through Peru to northwestern Bolivia (La Paz)
  • C. p. minimus: Southern Peru in Puno (Oconeque)
  • C. p. polyglottus: South-eastern Brazil (Goiás and Minas Gerais) to Paraguay and north-eastern Argentina
  • C. p. tucumanus: North-western Argentina (Jujuy to Catamarca and Tucumán)

Platensis Group

  • C. p. platensis: Central and eastern Argentina to Córdoba and Mendoza
  • C. p. hornensis: Southern Argentina (Neuquén) and Chile (Coquimbo) to Tierra del Fuego
  • C. p. falklandicus: Falkland Islands

Habitat

Wet meadows and marsh edges.

Behaviour

Breeding

The male builds the nest which is rounded, with a side entrance, well hidden, and attached to low vegetation. 2-8 white eggs are laid.

Diet

The diet includes insects and spiders.

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. Herkert, J. R., D. E. Kroodsma, and J. P. Gibbs (2001). Sedge Wren (Cistothorus platensis), version 2.0. In The Birds of North America (A. F. Poole and F. B. Gill, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bna.582
  3. Jaramillo, A. (2014) Sedge Wren Shakeup!! (retrieved from http://alvarosadventures.com/sedge-wren-shakeup/ on 24 May 2018)
  4. Kroodsma, D., Brewer, D., Marks, J.S. & Kirwan, G.M. (2018). Grass Wren (Cistothorus platensis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58115 on 23 May 2018)
  5. Remsen, J. V., Jr., J. I. Areta, C. D. Cadena, S. Claramunt, A. Jaramillo, J. F. Pacheco, M. B. Robbins, F. G. Stiles, D. F. Stotz, and K. J. Zimmer. Version [May 2018]. A classification of the bird species of South America. American Ornithologists' Union. http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm
  6. Robbins, M.B. & Nyári, Á.S. (2014) Canada to Tierra del Fuego: species limits and historical biogeography of the Sedge Wren (Cistothorus platensis). Wilson J. Orn. 126(4): 649–662.
  7. Traylor, M. A. 1988. Geographic variation and evolution in South American Cistothorus platensis (Aves: Troglodytidae). Fieldiana Zool. no. 48:1-35.

Recommended Citation

External Links

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