Beautiful nuthatch (English Wikipedia)

BirdLife International (2020). "Sitta formosa". IUCN Red List of Threatened Species. 2020 e.T22711231A177623642. doi:10.2305/IUCN.UK.2020-3.RLTS.T22711231A177623642.en. Retrieved 19 November 2021.
Hoyo, Josep del; Elliott, Andrew; Christie, David A. (2008). "Sittidae (Nuthatches): Systematics". Handbook of the Birds of the World: Penduline-tits to Shrikes. Vol. 13. Lynx Edicions (HBW Alive for online version). doi:10.2173/bow.sittid1.01.
Pasquet, Eric; Barker, F. Keith; Martens, Jochen; Tillier, Annie; Cruaud, Corinne; Cibois, Alice (April 2014). "Evolution within the nuthatches (Sittidae: Aves, Passeriformes): molecular phylogeny, biogeography, and ecological perspectives". Journal of Ornithology. 155 (3): 755–765. Bibcode:2014JOrni.155..755P. doi:10.1007/s10336-014-1063-7. S2CID 254162566.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

Pasquet, Eric; Barker, F. Keith; Martens, Jochen; Tillier, Annie; Cruaud, Corinne; Cibois, Alice (April 2014). "Evolution within the nuthatches (Sittidae: Aves, Passeriformes): molecular phylogeny, biogeography, and ecological perspectives". Journal of Ornithology. 155 (3): 755–765. Bibcode:2014JOrni.155..755P. doi:10.1007/s10336-014-1063-7. S2CID 254162566.

hbw.com (Global: 3,128^th place; English: 4,193^rd place)

Hoyo, Josep del; Elliott, Andrew; Christie, David A. (2008). "Sittidae (Nuthatches): Systematics". Handbook of the Birds of the World: Penduline-tits to Shrikes. Vol. 13. Lynx Edicions (HBW Alive for online version). doi:10.2173/bow.sittid1.01.

hokkaido-ies.go.jp (Global: low place; English: low place)

birdbase.hokkaido-ies.go.jp

Hokkaido Institute of Environmental Sciences and Japan Science and Technology Agency. "Beautiful Nuthatch Sitta formosa" (PDF). BirdBase. Archived from the original (PDF) on 4 March 2016. Retrieved 29 April 2014.

iucnredlist.org (Global: 88^th place; English: 160^th place)

BirdLife International (2020). "Sitta formosa". IUCN Red List of Threatened Species. 2020 e.T22711231A177623642. doi:10.2305/IUCN.UK.2020-3.RLTS.T22711231A177623642.en. Retrieved 19 November 2021.

oed.com (Global: 360^th place; English: 231^st place)

"Nuthatch". Oxford English Dictionary. Oxford University Press. Retrieved 17 April 2014.

researchgate.net (Global: 120^th place; English: 125^th place)

Dickinson, Edward C.; Loskot, Edward C.; Loskot, Vladimir M.; Morioka, Hiroyuki; Somadikarta, Soekarja (2000). "Systematic notes on Asian birds. 66. Types of the Sittidae and Certhiidae". Zoologische Mededelingen (80): 287–310.

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

Pasquet, Eric; Barker, F. Keith; Martens, Jochen; Tillier, Annie; Cruaud, Corinne; Cibois, Alice (April 2014). "Evolution within the nuthatches (Sittidae: Aves, Passeriformes): molecular phylogeny, biogeography, and ecological perspectives". Journal of Ornithology. 155 (3): 755–765. Bibcode:2014JOrni.155..755P. doi:10.1007/s10336-014-1063-7. S2CID 254162566.

web.archive.org (Global: 1^st place; English: 1^st place)

"Nuthatches, Wallcreeper, treecreepers, mockingbirds, starlings & oxpeckers". Version 6.4. International Ornithological Congress (IOC) World Bird List. 22 October 2016. Family Sittidae. Archived from the original on 22 December 2016.
Peterson, Alan P. (21 August 2016). "Entry for Sitta formosa in Zoonomen – Zoological Nomenclature Resource". Version 1.018. Passeriformes: Sittidae Lesson 1828 – Listing with subspecies. Archived from the original on 25 October 2017.
Hokkaido Institute of Environmental Sciences and Japan Science and Technology Agency. "Beautiful Nuthatch Sitta formosa" (PDF). BirdBase. Archived from the original (PDF) on 4 March 2016. Retrieved 29 April 2014.

worldbirdnames.org (Global: 1,007^th place; English: 1,255^th place)

"Nuthatches, Wallcreeper, treecreepers, mockingbirds, starlings & oxpeckers". Version 6.4. International Ornithological Congress (IOC) World Bird List. 22 October 2016. Family Sittidae. Archived from the original on 22 December 2016.

worldcat.org (Global: 5^th place; English: 5^th place)

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Peters, James Lee (1967). Raymond A. Paynter Jr. (ed.). Check-List of Birds of the World. Vol. XII. Museum of Comparative Zoology. p. 128. OCLC 605148103.
Hume, Allan Octavian (1890). The Nests and Eggs of Indian Birds (2nd ed.). London: R. H. Porter. p. 146. OCLC 216484499.

zoonomen.net (Global: low place; English: low place)

Peterson, Alan P. (21 August 2016). "Entry for Sitta formosa in Zoonomen – Zoological Nomenclature Resource". Version 1.018. Passeriformes: Sittidae Lesson 1828 – Listing with subspecies. Archived from the original on 25 October 2017.

Beautiful nuthatch (English Wikipedia)

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zoonomen.net (Global: low place; English: low place)

archive.org (Global: 6^th place; English: 6^th place)

birdlife.org (Global: 2,179^th place; English: 1,991^st place)

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iucnredlist.org (Global: 88^th place; English: 160^th place)

oed.com (Global: 360^th place; English: 231^st place)

researchgate.net (Global: 120^th place; English: 125^th place)

semanticscholar.org (Global: 11^th place; English: 8^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldbirdnames.org (Global: 1,007^th place; English: 1,255^th place)

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