Chestnut-vented nuthatch
The chestnut-vented nuthatch utters different kinds of calls, which can sometimes sound like a wren alarm, and its song is a monotonous, stereotypical crackle, typically chichichichi.Chestnut-vented nuthatches are found in the northeast of India, in parts of Tibet and south-central China, descending into eastern Myanmar and northwestern Thailand.The species was described in 1874 by the British naturalist Henry Haversham Godwin-Austen, who named it Sitta nagaensis after the Naga Hills, where the type material was collected.However, the bird's range is relatively wide, and the International Union for the Conservation of Nature currently considers the species of least concern.[5] In 2014, Eric Pasquet and colleagues published a phylogeny based on examination of nuclear and mitochondrial DNA of 21 nuthatch species.[fn.[12] This is possibly due to the fact that the type series of S. e. sinensis was composite and included a specimen of the chestnut-vented nuthatch.[12][15] The upperparts are a solid blue-grey from crown to tail, with a marked black loral line extending to the base of the wing.[12] Three subspecies are accepted, but variation is essentially clinal, with Chinese populations (S. n. montium) having buff underparts, which get duller and purer grey as they move southward in the species' distribution.As the latter subspecies has more orange underparts, some Eurasian females may be difficult to differentiate from chestnut-vented nuthatches in fresh plumage.[12] Hybrids between these two taxa have been suggested,[11] with montane populations of S. e. sinensis being, like the chestnut-vented nuthatch, greyer on the underside, darker above, and larger than lowland individuals.[12] The chestnut-vented nuthatch generally lives alone or in pairs, but joins mixed-species foraging flocks outside of the breeding season.The chestnut-vented nuthatch's calls are varied, with squeaky sit or sit-sit sounds, repeated more or less rapidly with various inflections and in irregular series.The alarm calls of the chestnut-vented nuthatch are reported in English-language literature as nasal sounds in quir, kner or mew, as well as an emphatic, metallic tsit, sometimes doubled or repeated in quick series.[1] A study carried out in 2009 tried to predict the impact of climate change on the distribution of several species of nuthatches in Asia by modeling two scenarios.
Nat Ma TaungMyanmarConservation statusLeast ConcernIUCN 3.1Scientific classificationEukaryotaAnimaliaChordataPasseriformesSittidaeBinomial nameGodwin-AustenSynonymsspeciesarthropodsclutchThailandVietnamevergreen forestspine forestsdeciduous forestssubtropical or tropical moist lowland forestsmontane forestsHenry Haversham Godwin-AustenNaga HillsKashmir nuthatchEurasian nuthatchInternational Union for the Conservation of Naturesubgenusphylogenynuclearmitochondrial DNAwestern rock nuthatcheastern rock nuthatchwhite-tailed nuthatchwhite-browed nuthatchmorphologyBeautiful nuthatchSiberian nuthatchIndian nuthatchChestnut-bellied nuthatchBurmese nuthatchLa ToucheJohn La ToucheprotonymKinnearMount VictoriahybridisationSitta europaea sinensistype serieslectotypeVerreauxHongya Countyplumagesexual dimorphismclinalNortheast IndiaSichuanFujianYunnan nuthatchsuperciliumrectricesgiant nuthatchyellow-cheeked titmixed-species foraging flocksbushtitswoodpeckersalcippesminlasEurasian wrenrattletremolopredationLâm Đồng provinceArunachal PradeshNagalandManipurMeghalayaChin HillsKachin StateShan StateYunnanGuizhouMount HuanggangĐà Lạt PlateauBolaven PlateauQuercus subsericeaalder grovessprucerhododendronpoplarwalnuthabitat destructionclimate changeDavid Quinnyellow-billed nuthatchInternational Ornithological CongressPrzevalski's nuthatcheuropaeaIUCN Red List of Threatened SpeciesDickinson, E. C.Somadikarta, S.Zoologische MededelingenResearchGateGodwin-Austen, H. H.Proceedings of the Zoological Society of LondonInternet ArchiveA & C BlackGoogle BooksJournal of OrnithologyBibcodeThe IbisKinnear, Norman BoydBulletin of the British Ornithologists' ClubOxford University PressChristopher HelmZoologische VerhandelingenLeidenCornell Lab of OrnithologyPrinceton University PressStanford, J. K.Ticehurst, Claud B.Wiley Online LibrarySchäfer, ErnstDe Schauensee, Rodolphe Meyer