Wallcreeper

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Wallcreeper
Wallcreeper (Tichodroma muraria) female Piatra Craiului.jpg
Female in the Piatra Craiului Mountains, Transylvania, Romania
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tichodromidae
Genus: Tichodroma
Species:
T. muraria
Binomial name
Tichodroma muraria
(Linnaeus, 1766)
TichodromaMurariaIUCN.png
Range of T. muraria (Compiled by: BirdLife International and Handbook of the Birds of the World (2019) 2019.)
  Resident
  Non-breeding
Synonyms
  • Certhia murariaLinnaeus, 1766

The wallcreeper (Tichodroma muraria) is a small passerine bird found throughout the high mountains of the Palearctic from southern Europe to central China. It is the only extant member of both the genus Tichodroma and the family Tichodromidae.

Contents

Taxonomy and systematics

There is some disagreement among ornithologists as to where the wallcreeper belongs in the taxonomic order. Initially, Linnaeus placed it in the family Certhiidae, along with the treecreepers. [2] The wallcreeper is placed in a monotypic family Tichodromadidae by, amongst others, Clements 2007, while other authorities such as Dickinson 2003 put it in the monotypic Tichodromadinae, a subfamily of the nuthatch family Sittidae. In either case, it is very closely related to the nuthatches. A 2016 phylogenetic study of members in the superfamily Certhioidea suggests it is a sister of the Sittidae. [3] At least one other species of wallcreeper is known from the fossil record, Tichodroma capeki (Late Miocene of Polgardi, Hungary). [4]

Certhioidea

Tichodromidae: wallcreeper

Sittidae: nuthatches

Certhiidae: treecreepers

Polioptilidae: gnatcatchers

Troglodytidae: wrens

Relationships among families in the superfamily Certhioidea. [5]

The genus name Tichodroma comes from the Ancient Greek teikhos "wall", and dromos "runner". The specific muraria is Medieval Latin for "of walls", from Latin murus, "wall". [6] Alternatively, the wallcreeper is named the red-winged wall creeper. [7]

Subspecies

Two subspecies are recognized: [8]

Description

The wallcreeper is a 15.5–17-centimetre (6.1–6.7 in) long bird, with a mass of 17–19 grams (0.60–0.67 oz). Its plumage is primarily blue-grey, with darker flight and tail feathers. Its most striking plumage feature, though, are its extraordinary crimson wings. Largely hidden when the wings are folded, this bright colouring covers most of the covert feathers, and the basal half of the primaries and secondaries. The subspecies T. m. nepalensis is slightly darker than the nominate race.

Vocalizations

Though largely silent, both male and female wallcreepers sing, the females generally only while defending feeding territories in the winter. [9] The song is a high-pitched, drawn-out whistle, with notes that alternately rise and fall. [10] During the breeding season, the male sings while perched or climbing.

Distribution and habitat

A bird of the high mountains, the wallcreeper breeds at elevations ranging between 1,000 and 3,000 metres (3,300 and 9,800 ft). [10] It is largely resident across its range, but moves to lower elevations in winter, when it is found on buildings and in quarries. In France it regularly and repeatedly winters on cathedrals and viaducts in Brittany and Normandy. [11] Birds have wintered as far afield as England and the Netherlands, where one spent two consecutive winters between 1989 and 1991 at the Vrije Universiteit in Amsterdam. [12] The species is resident across much of the Himalayas, ranging across India, Nepal, Bhutan and parts of Tibet and also as a winter visitor in Bangladesh. [13] [14]

Behaviour and ecology

Dropping off a cliff edge Wallcreeper (Tichodroma muraria) female composite Piatra Craiului.jpg
Dropping off a cliff edge

This species can be quite tame, but is often surprisingly difficult to see on mountain faces. While it may be confiding in the breeding and non-breeding seasons, and vagrant birds especially are extremely tame, they will still hide when they are aware of being watched, and will hesitate before entering the nest and even take roundabout routes towards the nest during prolonged observations. [15]

Wallcreepers are territorial, and pairs vigorously defend their breeding territory during the summer. During the winter the wallcreeper is solitary, with males and females defending individual feeding territories. The size of these feeding territories is hard to estimate but may comprise a single large quarry or rock massif; or, alternatively, a series of smaller quarries and rock faces. Wallcreepers may travel some distances from roosting sites to feeding territories. They have also been demonstrated showing site fidelity to winter feeding territories in consecutive years. [15]

Breeding

Tichodroma muraria - MHNT Tichodroma muraria MHNT.ZOO.2010.11.184.1.jpg
Tichodroma muraria - MHNT

The female wallcreeper builds a cup nest of grass and moss, sheltered deep in a rock crevice, hole or cave. [9] The nest is lined with softer materials, often including feathers or wool, [2] and typically has two entrances. The female usually lays 4–5 eggs, though clutches as small as three have been found. The white eggs measure 21 mm long, and are marked with a small number of black or reddish-brown speckles. Once her entire clutch has been laid, the female incubates the eggs for 19–20 days, until they hatch. During incubation, she is regularly fed by her mate. [2] Young are altricial, which means they are blind, featherless and helpless at birth. Both parents feed the nestlings for a period of 28–30 days, until the young birds fledge. Each pair raises a single brood a year.

Feeding

The wallcreeper is an insectivore, feeding on terrestrial invertebrates—primarily insects and spiders—gleaned from rock faces. [9] It sometimes also chases flying insects in short sallies from a rock wall perch. Feeding birds move across a cliff face in short flights and quick hops, often with their wings partially spread.

Related Research Articles

<span class="mw-page-title-main">Nuthatch</span> Genus, Sitta, of small passerine birds from the Northern Hemisphere

The nuthatches constitute a genus, Sitta, of small passerine birds belonging to the family Sittidae. Characterised by large heads, short tails, and powerful bills and feet, nuthatches advertise their territory using loud, simple songs. Most species exhibit grey or bluish upperparts and a black eye stripe.

<span class="mw-page-title-main">Indian spotted creeper</span> Species of bird

The Indian spotted creeper is a small passerine bird, which is a member of the subfamily Salpornithinae which is placed along with the treecreepers in the family Certhiidae. This small bird has a marbled black and white plumage that makes it difficult to spot as it forages on the trunks of dark, deeply fissured trees where it picks out insect prey using its curved bill. It is found in patchily distributed localities mainly in the dry scrub and open deciduous forests of northern and central peninsular India. It does not migrate. Their inclusion along with the treecreepers is not certain and some studies find them more closely related to the nuthatches while others suggest a close relation to the wallcreeper. They lack the stiff tail feathers of treecreepers and do not use their tail for supporting them while creeping vertically along tree trunks.

<span class="mw-page-title-main">Rosy starling</span> Species of bird

The rosy starling is a passerine bird in the starling family, Sturnidae, also known as the rose-coloured starling or rose-coloured pastor. The species was recently placed in its own monotypic genus, Pastor, and split from Sturnus. This split is supported by recent studies, though other related species within its new genus are not yet known for certain.

<span class="mw-page-title-main">Beautiful nuthatch</span> Species of bird

The beautiful nuthatch is a bird species in the family Sittidae, collectively known as nuthatches. It is a large nuthatch, measuring 16.5 cm (6.5 in) in length, that is not sexually dimorphic. Its coloration and markings are dramatic, the upper parts being black and azure, streaked with white and pale blue on the head and lined with the same colors on the wing feathers. The underparts are orange, and the eyebrow and throat are ochre. An irregular, dark eyestripe highlights its eye. S. formosa's ecology is not fully described, but it is known to feed on small insects and larvae found on the trunks and epiphyte-covered branches of trees in its range. Reproduction takes place from April to May; the nest is placed in the hole of an oak, rhododendron, or other large tree. The nest is made of plant material and fur in which the bird typically lays four to six eggs.

<span class="mw-page-title-main">White-breasted nuthatch</span> Species of bird

The white-breasted nuthatch is a species of bird in the nuthatch family Sittidae. It is a medium-sized nuthatch, measuring approximately 15.5 cm (6.1 in) in length. Coloration varies somewhat along the species' range, but the upperparts are light blue-gray, with a black crown and nape in males, while females have a dark gray crown. The underparts are whitish, with a reddish tinge on the lower abdomen. Despite not being closely related, the white-breasted nuthatch and the white wagtail are very similar in plumage. The white-breasted nuthatch is a noisy bird. It has a nasal voice and often utters little cries or vocalizations, often composed of repetitions of small invariant whistles. In summer, it is an exclusively insectivorous bird, consuming a wide range of arthropods, but in winter its diet consists mainly of seeds. The nest is located in the cavity of a tree. The clutch consists of five to nine eggs, incubated for two weeks by the female, who is fed by the male. The two adults then feed the young until they fledge, and for a few weeks after that.

<i>Salpornis</i> Genus of birds

Salpornis is a genus of bird which is usually included in the family Certhiidae. The genus has in the past been included with the nuthatches in the family Sittidae or placed in a family of its own, the Salpornithidae. Molecular phylogenetic analyses show them to be definitely within the Certhioidea but still leaves some uncertainty about their placement in relation to the genera Sitta, Tichodroma and Certhia. While they appear similar to the treecreepers (Certhia), they do not use their tails to support them while climbing and some molecular evidence shows them to be closer to the nuthatches (Sitta) while another study suggests a closer relation to the wallcreeper Tichodroma muraria. The generic name is derived from the Greek salpinktes for wren and ornis for bird.

<i>Tichodroma</i> Genus of bird

Tichodroma is the only known genus in the family Tichodromidae. Initially, Linnaeus placed Tichodroma in the family Certhiidae, along with the treecreepers., while other authorities have placed it the nuthatch family Sittidae, as its own subfamily. A 2016 phylogenetic study of members in the superfamily Certhioidea suggests it is a sister of the Sittidae.

<span class="mw-page-title-main">Krüper's nuthatch</span> Species of bird

Krüper's nuthatch is a species of bird in the family Sittidae. It is a small to medium-sized nuthatch, measuring 12.5 centimetres (4.9 in) in length. The upperparts are blue-gray, with the front half of the crown black in adults of both sexes, but with a less marked in the female rear. The species has a black or gray eyestripe and a prominent white supercilium. The underparts are blue-gray in males and buff-gray in females, with a large, crescent-shaped rufous pectoral patch. The Krüper's nuthatch feeds on insects in the summer and seeds, especially pines, in the fall and winter. Breeding takes place between March and May, and the nest is usually placed in a tree hole. The clutch consists of five to seven eggs, incubated by the female and fed by the male. Both parents take part in feeding the young.

<span class="mw-page-title-main">Chinese nuthatch</span> Species of bird

The Chinese nuthatch or snowy-browed nuthatch is a species of bird in the family Sittidae. It is a small nuthatch, measuring 11.5 cm (4.5 in) in length. The upperparts are blue-gray and the underparts from a dull buff-grayish to a cinnamon-orange; the cheeks are white. There is a marked sexual dimorphism: the adult male is distinguished by its very black crown, while that of the female is the same blue-grey as the back, or at most dark gray when the plumage is worn. In both sexes, a dark gray eyestripe extends in front of and behind the eye, topped by a clear white supercilium separating it from the crown. The song is variable, and composed of repetitions of small invariant whistles. The species feeds mainly on insects in summer and completes its diet with seeds and fruits. The nest is generally placed in the hole of a conifer. The pairs raises one brood per year, with five or six chicks.

References

  1. BirdLife International (2019). "Tichodroma muraria". IUCN Red List of Threatened Species . 2019: e.T22711234A155489183. doi: 10.2305/IUCN.UK.2019-3.RLTS.T22711234A155489183.en . Retrieved 19 November 2021.
  2. 1 2 3 Campbell, Bruce; Elizabeth Lack (1985). A Dictionary of Birds. Calton: T & A D Poyser. pp. 638–39. ISBN   0-85661-039-9.
  3. Zhao, Min; Alström, Per; Olsson, Urban; Qu, Yanhua; Lei, Fumin (2016). "Phylogenetic position of the Wallcreeper Tichodroma muraria". Journal of Ornithology. 157 (3): 913. doi:10.1007/s10336-016-1340-8. S2CID   26838254.
  4. Kessler, E. 2013. Neogene songbirds (Aves, Passeriformes) from Hungary. – Hantkeniana, Budapest, 2013, 8: 37-149.
  5. 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. Bibcode:2019PNAS..116.7916O. doi: 10.1073/pnas.1813206116 . PMC   6475423 . PMID   30936315.
  6. Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp. 262, 385. ISBN   978-1-4081-2501-4.
  7. "Tichodroma muraria (Wallcreeper) - Avibase". avibase.bsc-eoc.org. Retrieved 2017-07-23.
  8. "Nuthatches, Wallcreeper, treecreepers, mockingbirds, starlings & oxpeckers « IOC World Bird List". www.worldbirdnames.org. Retrieved 2017-07-23.
  9. 1 2 3 Ehrlich, Paul R.; Dobkin, David S.; Wheye, Darryl; Pimm, Stuart L. (1994). The Birdwatcher's Handbook . Oxford University Press. pp.  440. ISBN   978-0198584070.
  10. 1 2 Svensson, Lars; Peter J. Grant (1999). Collins Bird Guide. London: HarperCollins. pp. 324–5.
  11. ornithomedia.com (in French)
  12. waarneming.nl (in Dutch)
  13. "Wallcreeper (Tichodroma muraria) - BirdLife species factsheet".
  14. Kirwan, Guy M.; Löhrl, Hans; Wilson, Mike (4 March 2020). Billerman, Shawn M; Keeney, Brooke K; Rodewald, Paul G; Schulenberg, Thomas S (eds.). "Wallcreeper (Tichodroma muraria)". Birds of the World. doi:10.2173/bow.wallcr1.01. S2CID   216231765.
  15. 1 2 Harrap, Simon (2008), "Family Tichodromidae (Wallcreeper)", in del Hoyo, Josep; Elliott, Andrew; Christie, David (eds.), Handbook of the Birds of the World. Volume 13, Penduline-tits to Shrikes, Barcelona: Lynx Edicions, pp. 146–165, ISBN   978-84-96553-45-3