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House Wren - BirdForum Opus

Revision as of 00:53, 26 January 2011 by Njlarsen (talk | contribs) (extra recording)
Photo by Muskrat
North-eastern Pennsylvania, USA
Troglodytes aedon

Includes Cobb's Wren

Identification

4 1/2 -5 1/4" (11-13 cm).

  • Tiny bird
  • Short tail, often held cocked over the back
  • Dusky brown above
  • Paler below, with no distinctive markings
Cobb's Wren
Photo by Alan Henry
Falkland Islands

Similar Species

Winter Wren is similar but smaller and darker, with shorter tail and pale eyebrow.

Distribution

As discussed below, there are four main groups within house wren, which may become full species.

  • Northern House Wren: breeds in much of the United States and southern parts of Canada; members of this groups are at least partly migratory.
  • Brown-throated Wren: mainly a Mexican grouping, but also found in southern Arizona.
  • Southern House Wren: much of Central and South America.
  • Antillean House Wren: several islands in the Lesser Antilles (possibly even with one species per island).
  • Cobb's Wren: several rat and cat free islands of the Falkland Islands.

Taxonomy

Clements1 accepts 32 subspecies of House Wren. There has been several rumblings about splitting this species into several species, with the approximate divisions given in the section on "Distribution" above. The taxonomic status of House Wren have been discussed elsewhere in Birdforum2 and there are indications that the northern group may need to be split into an eastern and western form.

One split that seemed to have been accepted by Clements was Cobb's Wren of the Falkland Islands. However, with the new Clements update this Wren has been lumped again into House Wren. This thread discusses a recent (March 2009) proposal to split Cobb's Wren.

Subspecies

Northern House Wren

Caribbean House Wren

Brown-throated House Wren

  • T. a. cahooni: Mountains of south-eastern Arizona to central Mexican plateau
  • T. a. brunneicollis: Central and southern Mexico (San Luis Potosí and Hidalgo to Oaxaca)
  • T. a. compositus: Mountains of eastern Mexico (Coahuila and Nuevo León to Puebla)
  • T. a. nitidus: Southern Mexico (Mount Zempoaltepec in Oaxaca)

Southern House Wren

Habitat

Residential areas, city parks, farmlands, and woodland edges.

Behaviour

Breeding

The nest is cup shaped, made of sticks, grass and lined with feathers. 5-8 white, brown-speckled eggs are laid.

Vocalisation

Song is very variable among the different populations, but normally relatively standard within each population. In the USA often first rising, then falling, and often described as having a bubbling quality.

<flashmp3>House_Wren_Dom_by_NJLarsen.mp3‎</flashmp3>
Listen in an external program


Recording by NJLarsen in Dominica. Bird is subspecies rufescens

<flashmp3>House_Wren_Costa_Rica_20101231_162906_gain_up.mp3‎</flashmp3>
Listen in an external program


Recording by NJLarsen in Rancho Naturalista, Costa Rica. Bird is subspecies intermedius

References

  1. Clements, JF. 2008. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2008. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist.
  2. eNature
  3. Second half of this thread was mostly about House Wren taxonomy

Recommended Citation

External Links


This video link searches for House Wren using the Chilean local name of Chercán (Troglodytes aedon chilensis)

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