World Library  
Flag as Inappropriate
Email this Article

Corsican nuthatch

Article Id: WHEBN0000734162
Reproduction Date:

Title: Corsican nuthatch  
Author: World Heritage Encyclopedia
Language: English
Subject: List of birds of Corsica, Nuthatch, Nuthatches, Endemic birds of the Western Palearctic, Categories for discussion/Log/2015 May 9
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Corsican nuthatch

Corsican Nuthatch
Lithograph by J. G. Keulemans published in 1885
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Sittidae
Genus: Sitta
Species: S. whiteheadi
Binomial name
Sitta whiteheadi
Sharpe, 1884

The Corsican nuthatch (Sitta whiteheadi) is a small passerine bird that is endemic to Corsica, where it is the only nuthatch. It is restricted to mature stands of Corsican pine (Pinus nigra spp. laricio) which grow at altitudes of from 800 to 1,600 m (2,600 to 5,200 ft).

Contents

  • Taxonomy 1
  • Description 2
  • Distribution and habitat 3
  • Behaviour 4
    • Breeding 4.1
    • Feeding 4.2
  • Predators 5
  • Status 6
  • References 7
  • Sources 8
  • Further reading 9
  • External links 10

Taxonomy

The nuthatches are a genus (sitta) of passerine birds with short tails and wings, compact bodies and longish pointed bills. They have grey or bluish upperparts, a black eyestripe and strong feet. Their tails have 12 feathers (rectrices) and their wings have ten primary flight feathers.[2] In 2015 the International Ornithological Committee listed 28 different species.[3]

The Corsican nuthatch was discovered by the English collector [4] Sharpe used the additional specimens gathered by Whitehead to publish a fuller description of the species.[6]

Within the genus the Corsican nuthatch belongs to the canadensis group which also includes the Red-breasted nuthatch (S. canadensis), the Chinese nuthatch (S. villosa), Krüper's nuthatch (S. krueperi) and the Algerian nuthatch (S. ledanti).[7][8] These six species usually excavate their own nests and all except the Algerian nuthatch specialize in extracting seeds from pine cones. All members of the group also exhibit sexually dimorphism in the colour of their head feathers.[9] Analysis of ribosomal and mitochondrial DNA indicated that the Corsican nuthatch is most closely related to the Chinese nuthatch and that they diverged from a common ancestor around 0.96 million years ago.[9] The large distance separating the ranges of the two sister species is very unusual for Palaearctic passerines.[8] The Yunnan nuthatch is a sister species to the canadensis group[9] and has many common features.[10]



Yunnan nuthatch (S. yunnanensis)




Algerian nuthatch (S. ledanti)


Krüper's nuthatch (S. krueperi)





Corsican nuthatch (S. whiteheadi)


Chinese nuthatch (S. villosa)



Red-breasted nuthatch (S. candensis)




Cladogram of the candensis group based on Pasquet et al. (2014)[9]

Description

The adult male is 12 cm (4.7 in) long and weighs 11.8–14.4 g (0.42–0.51 oz). It has a black crown and eyestripe separated by a white supercilium. The upperparts are blue-grey and the throat and underparts are greyish-buff. The flight feathers are dark grey-brown fringed with blue-grey. The bill is black to grey-brown becoming pale grey on the base of the lower mandible, the iris is dark brown and the legs and feet are grey-brown or greyish. The female is similar to the male but has a grey crown and eyestripe. Young birds are duller versions of the adults.[11]

The Corsican Nuthatch has a pu-pu-pu call and a trilled hididididididi song.

Adults have a complete moult after breeding. Juveniles have a partial moult beginning about 8 weeks after fledging.[11] The adult annual survival rate for male birds is 62 per cent which corresponds to an average lifetime of 2 years and 1 month. The maximum recorded age is 5 years and 7 months.[12]

Distribution and habitat

The Corsican nuthatch is a resident bird of the mountain forests of Corsica, and is closely associated with Corsican pine (Pinus nigra spp. laricio) preferably with some very old trees aged 300 years or more for nesting.[11]

Behaviour

Breeding

This territorial species nests in holes in dead and decaying Corsican pines, which are usually self-excavated.

The clutch is typically 4–6 eggs (mean 5.1).[13] The eggs are white with red-brown speckles especially at the larger end and are 17.2 mm × 13 mm (0.68 in × 0.51 in) in size.[14] The female incubates the eggs for 14-17 days until they hatch. She is fed on the nest by the male. The female then broods the altricial downy chicks for the first 8 days. The chicks are fed by both adults and fledge when they are around 20 days old.[15]

Feeding

During the winter months the diet of the Corsican nuthatch consists almost entirely of seeds from Corsican pines. The birds use their long pointed bills to extract the seeds from mature cones that open in fine weather between November and March. Many of the individual seeds are hoarded by the birds in crevices in the bark. These cached seeds are recovered during bad weather when the cones do not open as unlike [17]

It has the ability, like other nuthatches, to climb down trees, unlike species such as woodpeckers which can only go upwards, and will also flycatch.

Predators

Predation is an important cause for the breeding failure of the Corsican nuthatch. The most important predator is believed to be the great spotted woodpecker which is relatively abundant in the pine forests. The Corsican nuthatch takes no action to protect its nest from predation unlike other nuthatch species such as the Eurasian nuthatch that reduces the size of the entrance hole with mud or the red-breasted nuthatch that covers the inner surfaces with pine resin. Instead the Corsican nuthatch excavates its own nest and creates only a narrow entrance hole of around 3.2 cm (1.3 in). This compares with the 5–6 cm (2.0–2.4 in) hole made by the great spotted woodpecker for the entrance to its own nest.[13]

The garden dormouse (Eliomys quercinus) has been proposed as another possible nest predator. Its small size would allow it to pass through entrance hole of the nest but it is not known to climb high up tree trunks.[13]

Status

The population is about 2,000 pairs;[18] the main threats are fire, which destroys the habitat, and predation by great spotted woodpeckers. Since 2010 this bird is considered as a vulnerable species.[1]

References

  1. ^ a b  
  2. ^ Harrap & Quinn 1996, p. 16.
  3. ^ Gill, Frank; Donsker, David (eds.). "Nuthatches, Wallcreeper, treecreepers, mockingbirds, starlings & oxpeckers". World Bird List Version 5.2. International Ornithologists Committee. Retrieved 15 May 2015. 
  4. ^ a b Whitehead 1885, p. 28.
  5. ^  
  6. ^ Sharpe, R. Bowdler (1884). "Further notes on Whitehead's nuthatch". Proceedings of the Zoological Society of London: 414–415 , plate 36. 
  7. ^ Harrap & Quinn 1996, p. 147.
  8. ^ a b Pasquet, Eric (1998). "Phylogeny of the nuthatches of the Sitta canadensis group and its evolutionary and biogeographical implications". Ibis 140 (1): 150–156.  
  9. ^ a b c d Pasquet, Éric; Barker, F. Keith; Martens, Jochen; Tillier, Annie; Cruaud, Corinne; Cibois, Alice (2014). "Evolution within the nuthatches (Sittidae: Aves, Passeriformes): molecular phylogeny, biogeography, and ecological perspectives". Journal of Ornithology 155 (3): 755–765.  
  10. ^ Harrap & Quinn 1996, p. 144.
  11. ^ a b c Harrap & Quinn 1996, pp. 133-135.
  12. ^ Thibault, Jean-Claude; Jenouvrier, Stephanie. "Sitta whiteheadi"Annual survival rates of adult male Corsican Nuthatches . Ringing & Migration 23 (2): 85–88.  
  13. ^ a b c Thibault, Jean-Claude; Villard, Pascal (2005). "Sitta whiteheadi"Reproductive ecology of the Corsican Nuthatch . Bird Study 52 (3): 282–288.  
  14. ^  
  15. ^ Villard, Pascal; Thibault, Jean-Claude (2001). "Données sur les nids, la croissance des poussins et les soins parentaux chez la Sittelle corse Sitta whiteheadi" [Nests, nesting growth, and parental care of the Corsican Nuthatch Sitta whiteheadi]. Alauda (in French) 69 (4): 465–474. 
  16. ^ Thibault, Jean-Claude; Prodon, Roger; Villard, Pascal; Seguin, Jean-François (2006). "Habitat requirements and foraging behaviour of the Corsican nuthatch Sitta whiteheadi". Journal of Avian Biology 37 (5): 477–486.  
  17. ^ Whitehead 1885, p. 31.
  18. ^ Thibault, Jean-Claude; Hacquemand, Didier; Moneglia, Pasquale; Pellegrini, Hervé; Prodon, Roger; Recorbet, Bernard; Seguin, Jean-François; Villard, Pascal (2011). "Distribution and population size of the Corsican Nuthatch Sitta whiteheadi". Bird Conservation International 21 (2): 199–206.  

Sources

  • Harrap, Simon; Quinn, David (1996). Tits, Nuthatches and Treecreepers. London: Christopher Helm.  
  • Matthysen, Erik (2010) [1998]. The Nuthatches. Poyser Monographs. London: A & C Black.  
  •  

Further reading

  • Brichetti, Pierandrea; Di Capi, Carlo (1987). sharpe, and proposals for habitat management"Sitta whiteheadi"Conservation of the corsican nuthatch (PDF). Biological Conservation 39 (1): 13–21.  
  • Villard, Pascal; Besnard, Aurélien; Thibault, Jean-Claude; Recorbet, Bernard; Prodon, Roger (2014). "Selection of mature and old stands by Corsican Nuthatch Sitta whiteheadi in harvested forests". Ibis 156 (1): 132–140.  

External links

  • Internet Bird Collection: videos and photos
  • Xeno-canto: audio recordings
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.