Wren
Marsh wren (Cistothorus palustris)
Eurasian wren recorded in Speyside, Scotland
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Superfamily: Certhioidea
Family: Troglodytidae
Swainson, 1832
Genera and species

See text

Wrens are a family of brown passerine birds in the predominantly New World family Troglodytidae. The family includes 88 species divided into 19 genera. Only the Eurasian wren occurs in the Old World, where, in Anglophone regions, it is commonly known simply as the "wren", as it is the originator of the name. The name wren has been applied to other, unrelated birds, particularly the New Zealand wrens (Acanthisittidae) and the Australian wrens (Maluridae).

Most wrens are visually inconspicuous though they have loud and often complex songs. Exceptions include the relatively large members of the genus Campylorhynchus, which can be quite bold in their behaviour. Wrens have short wings that are barred in most species, and they often hold their tails upright. Wrens are primarily insectivorous, eating insects, spiders and other small invertebrates, but many species also eat vegetable matter and some eat small frogs and lizards.[1]

Etymology and usage

The English name "wren" derives from Middle English: wrenne and Old English: wrænna, attested (as wernnaa) very early, in an eighth-century gloss. It is cognate to Old High German: wrendo, wrendilo, and Icelandic: rindill (the latter two including an additional diminutive -ilan suffix). The Icelandic name is attested in Old Icelandic (Eddaic) as rindilþvari. This points to a Common Germanic name wrandjan-, but the further etymology of the name is unknown.[2]

The wren was also known as the kuningilin ('kinglet') in Old High German, a name associated with the fable of the election of the "king of birds". The bird that could fly to the highest altitude would be made king. The eagle outflew all other birds, but he was beaten by a small bird that had hidden in his plumage. This fable was already known to Aristotle (Historia Animalium 9.11)[3] and Pliny (Natural History 10.95),[4][5] and was taken up by medieval authors such as Johann Geiler von Kaisersberg, but it most likely originally concerned kinglets (Regulus, such as the goldcrest) and was apparently motivated by the yellow "crown" sported by these birds (a point noted already by Ludwig Uhland).[6] The confusion stemmed in part from the similarity and consequent interchangeability of the Ancient Greek words for the wren (βασιλεύς basileus, 'king')[7] and the crest (βασιλίσκος basiliskos, 'kinglet'),[8][9] and the legend's reference to the "smallest of birds" becoming king likely led the title to be transferred to the equally tiny wren.[6][10] In modern German, the name of the bird is Zaunkönig ('king of the fence (or hedge)') and in Dutch, the name is winterkoning ('king of winter').

The family name Troglodytidae is derived from troglodyte, which means 'cave-dweller'.[11] Wrens get their scientific name from the tendency of some species to forage in dark crevices.[12]

The name "wren" is also ascribed to other families of passerine birds throughout the world. In Europe, kinglets are commonly known as "wrens", with the common firecrest and goldcrest known as the "fire-crested wren" and "golden-crested wren", respectively.

The 27 Australasian "wren" species in the family Maluridae are unrelated, as are the New Zealand wrens in the family Acanthisittidae, the antbirds in the family Thamnophilidae, and the Old World babblers of the family Timaliidae.

Description

Wrens are medium-small to very small birds. The Eurasian wren is among the smallest birds in its range, while the smaller species from the Americas are among the smallest passerines in that part of the world. They range in size from the white-bellied wren, which averages under 10 cm (3.9 in) and 9 g (0.32 oz), to the giant wren, which averages about 22 cm (8.7 in) and weighs almost 50 g (1.8 oz). The dominating colors of their plumage are generally drab, composed of gray, brown, black, and white, and most species show some barring, especially on the tail or wings. No sexual dimorphism is seen in the plumage of wrens, and little difference exists between young birds and adults.[1] All have fairly long, straight to marginally decurved (downward-curving) bills.[1]

Wrens have loud and often complex songs, sometimes given in duet by a pair. The songs of members of the genera Cyphorhinus and Microcerculus have been considered especially pleasant to the human ear, leading to common names such as song wren, musician wren, flutist wren, and southern nightingale-wren.[1]

Distribution and habitat

Cobb's wren is an insular endemic, restricted to the Falkland Islands

Wrens are principally a New World family, distributed from Alaska and Canada to southern Argentina, with the greatest species richness in the Neotropics. As suggested by its name, the Eurasian wren is the only species of wren found outside the Americas, as restricted to Europe, Asia, and northern Africa (it was formerly considered conspecific with the winter wren and Pacific wren of North America). The insular species include the Clarión wren and Socorro wren from the Revillagigedo Islands in the Pacific Ocean, and Cobb's wren in the Falkland Islands, but few Caribbean islands have a species of wren, with only the southern house wren in the Lesser Antilles, the Cozumel wren of Cozumel Island, and the highly restricted Zapata wren in a single swamp in Cuba.

The various species occur in a wide range of habitats, ranging from dry, sparsely wooded country to rainforests. Most species are mainly found at low levels, but members of the genus Campylorhynchus are frequently found higher, and the two members of Odontorchilus are restricted to the forest canopy.[1] A few species, notably the Eurasian wren and the house wren, are often associated with humans. Most species are resident, remaining in Central and South America all year round, but the few species found in temperate regions of the Northern Hemisphere are partially migratory, spending the winter further south.

Behavior and ecology

Wrens vary from highly secretive species such as those found in the genus Microcerculus to the highly conspicuous genus Campylorhynchus, the members of which frequently sing from exposed perches. The family as a whole exhibits a great deal of variation in their behavior. Temperate species generally occur in pairs, but some tropical species may occur in parties of up to 20 birds.[1]

Wrens build dome-shaped nests, and may be either monogamous or polygamous, depending on species.[13]

Though little is known about the feeding habits of many of the Neotropical species, wrens are considered primarily insectivorous, eating insects, spiders, and other small arthropods.[1] Many species also take vegetable matter such as seeds and berries, and some (primarily the larger species) take small frogs and lizards. The Eurasian wren has been recorded wading into shallow water to catch small fish and tadpoles; Sumichrast's wren and the Zapata wren take snails; and the giant wren and marsh wren have been recorded attacking and eating bird eggs (in the latter species, even eggs of conspecifics).[1] A local Spanish name for the giant wren and bicolored wren is chupahuevo ('egg-sucker'), but whether the latter actually eats eggs is unclear.[1] The plain wren and northern house wren sometimes destroy bird eggs, and the rufous-and-white wren has been recorded killing nestlings, but this is apparently to eliminate potential food competitors rather than to feed on the eggs or nestlings.[1] Several species of Neotropical wrens sometimes participate in mixed-species flocks or follow army ants, and the Eurasian wren may follow badgers to catch prey items disturbed by them.[1]

Taxonomy and systematics

Certhioidea

Tichodromidae: wallcreepers

Sittidae: nuthatches

Certhiidae: treecreepers

Polioptilidae: gnatcatchers

Troglodytidae: wrens

Relatives of the wrens in the superfamily Certhioidea.[14]

Revised following Martínez Gómez et al. (2005) and Mann et al. (2006), the taxonomy of some groups is highly complex, and future species-level splits are likely. Additionally, undescribed taxa are known to exist. The black-capped donacobius is an enigmatic species traditionally placed with the wrens more for lack of a more apparent alternative than as a result of thorough study. It was recently determined to be most likely closer to certain warblers, possibly the newly established Megaluridae, and might constitute a monotypic family.[15]

Family Troglodytidae

Cactus wren (Campylorhynchus brunneicapillus)
Grey-mantled wren (Odontorchilus branickii)
Rock wren (Salpinctes obsoletus)
Canyon wren (Catherpes mexicanus)
Bewick's wren (Thryomanes bewickii)
Black-throated wren (Pheugopedius atrogularis)
Happy wren (Pheugopedius felix)
Bay wren (Cantorchilus nigricapillus)
Long-billed wren (Cantorchilus longirostris)
Southern house wren (Troglodytes aedon musculus)
Eurasian wren (Troglodytes troglodytes)

Relationship with humans

The wren features prominently in culture. The Eurasian wren has been long considered "the king of birds" in Europe.[17] Killing one or harassing its nest is associated with bad luck, such as broken bones, lightning strikes on homes, or injury to cattle. Wren Day, celebrated in parts of Ireland on St. Stephen's Day (26 December), features a fake wren being paraded around town on a decorative pole; up to the 20th century, real birds were hunted for this purpose.[18] A possible origin for the tradition is revenge for the betrayal of Saint Stephen by a noisy wren when he was trying to hide from enemies in a bush.[19]

The Carolina wren (Thryothorus ludovicianus) has been the state bird of South Carolina since 1948, and features on the back of its state quarter.[20][21] The British farthing featured a wren on the reverse side from 1937 until its demonetisation in 1960. The Cactus wren (Campylorhynchus brunneicapillus) was designated the state bird of Arizona in 1931.[22]

The Women's Royal Naval Service (WRNS) were nicknamed Wrens based on the acronym WRNS. After the Women's Royal Navy Service was integrated into the Royal Navy in 1993, the title of Wren was dropped from official usage, however unofficially female sailors are still referred to as Wrens.

References

  1. 1 2 3 4 5 6 7 8 9 10 11 Kroodsma, Donald; Brewer, David (2005), "Family Troglodytidae (Wrens)", in del Hoyo, Josep; Elliott, Andrew; Christie, David (eds.), Handbook of the Birds of the World. Volume 10, Cuckoo-shrikes to Thrushes, Barcelona: Lynx Edicions, pp. 356–447, ISBN 84-87334-72-5
  2. ↑ Kluge-Lutz, English Etymology tentatively suggest association with Old High German (w)renno "stallion", but Suolahti (1909) rejects this as unlikely.
  3. ↑ "It goes by the nickname of 'old man' or 'king'; and the story goes that for this reason the eagle is at war with him." http://etext.virginia.edu/etcbin/toccer-new2?id=AriHian.xml&images=images/modeng&data=/texts/english/modeng/parsed&tag=public&part=9&division=div2
  4. ↑ "Pliny the Elder, the Natural History, BOOK X. THE NATURAL HISTORY OF BIRDS., CHAP. 95. (74.)—ANTIPATHIES OF ANIMALS. PROOFS THAT THEY ARE SENSIBLE OF FRIENDSHIP AND OTHER AFFECTIONS".
  5. ↑ "The roiall Ægle hateth the Wren, and why? because (if we may beleeve it) he is named Regulus, [i. the petie-king.]" http://penelope.uchicago.edu/holland/pliny10.html
  6. 1 2 Suolahti, Viktor Hugo (1909). Die deutschen Vogelnamen: eine wortgeschichtliche Untersuchung (in German). Strassbourg: Karl J Trbner. pp. 80–85.
  7. ↑ βασιλεύς. Liddell, Henry George; Scott, Robert; A Greek–English Lexicon at the Perseus Project.
  8. ↑ βασιλίσκος in Liddell and Scott.
  9. ↑ Arnott, William Geoffrey (2007). Birds in the ancient world from A to Z. Abingdon: Routledge. p. 35. ISBN 978-0-415-23851-9.
  10. ↑ Cocker, Mark; Mabey, Richard (2005). Birds Britannica. London: Chatto & Windus. p. 232. ISBN 978-0-7011-6907-7.
  11. ↑ Harper, Douglas. "troglodyte". Online Etymology Dictionary.
  12. ↑ Vieillot, Louis Pierre (1809). Histoire naturelle des oiseaux de l'Amérique Septentrionale : contenant un grand nombre d'espèces décrites ou figurées pour la première fois (in French). Vol. 2. Paris: Desray. p. 52. Dated 1807 on title page but not published until 1809.
  13. ↑ Perrins, C. (1991). Forshaw, Joseph (ed.). Encyclopaedia of Animals: Birds. London: Merehurst Press. p. 190. ISBN 1-85391-186-0.
  14. ↑ Oliveros, C. H.; et al. (2019). "Earth history and the passerine superradiation". Proceedings of the National Academy of Sciences of the United States. 116 (16): 7916–7925. doi:10.1073/pnas.1813206116. PMC 6475423. PMID 30936315.
  15. ↑ Alström, Per; Ericson, Per G. P.; Olsson, Urban; Sundberg, Per (2006). "Phylogeny and classification of the avian superfamily Sylvioidea". Molecular Phylogenetics and Evolution. 38 (2): 381–97. doi:10.1016/j.ympev.2005.05.015. PMID 16054402.
  16. ↑ Albrecht, Frederik; Hering, Jens; Fuchs, Elmar; Illera, Juan Carlos; Ihlow, Flora; Shannon, Thomas J.; Collinson, J. Martin; Wink, Michael; Martens, Jochen; Päckert, Martin (2020). "Phylogeny of the Eurasian Wren Nannus troglodytes (Aves: Passeriformes: Troglodytidae) reveals deep and complex diversification patterns of Ibero-Maghrebian and Cyrenaican populations". PLOS ONE. 15 (3): e023015. Bibcode:2020PLoSO..1530151A. doi:10.1371/journal.pone.0230151. PMC 7082076. PMID 32191719.
  17. ↑ Frazer, James George (1922). "Chapter 54. Types of Animal Sacrament". The Golden Bough: A Study in Magic and Religion. New York: Macmillan.
  18. ↑ Lawrence, Elizabeth Atwood (1997). Hunting the Wren: Transformation of Bird to Symbol: a Study in Human-animal Relationships. Knoxville: University of Tennessee Press. ISBN 9780870499609.
  19. ↑ Eveleth, Rose (26 December 2012). "The Irish Used to Celebrate The Day After Christmas by Killing Wrens". Smithsonian Magazine. Retrieved 27 January 2016.
  20. ↑ "South Carolina State Bird – Thryrothorus ludovicianus". NetState. Retrieved 27 January 2016.
  21. ↑ "The Official South Carolina State Quarter". TheUS50. Retrieved 27 January 2016.
  22. ↑ "Arizona State Bird – Campylorhynchus brunneicapillus couesi". NetState. 3 September 2017. Retrieved 10 July 2020.
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