Editing Treecreeper (section)

==Taxonomy and systematics==
Some taxonomists place the nuthatches and treecreepers in a larger grouping with the [[wren]]s and [[gnatcatcher]]s. This [[taxonomic rank|superfamily]], the Certhioidea, was  based on [[phylogenetics|phylogenetic]] studies using [[mitochondria]]l and [[cell nucleus|nuclear]] DNA, and was created to cover a clade of four families removed from a larger grouping of passerine birds, the [[Old World warbler|Sylvioidea]].<ref name="Cracraft">Cracraft, J.; Barker, F. Keith; Braun, M. J.; Harshman, J.; Dyke, G.; Feinstein, J.; Stanley, S.; Cibois, A.; Schikler, P.; Beresford, P.; García-Moreno, J.; Sorenson, M. D.; Yuri, T.; Mindell. D. P. (2004) "Phylogenetic relationships among modern birds (Neornithes): Toward an avian tree of life."  p468&ndash;489 in ''Assembling the tree of life'' (J. Cracraft and M. J. Donoghue, eds.). Oxford University Press, New York. {{ISBN|0-19-517234-5}}</ref>  The fossil record for this group appears to be restricted to a foot bone of an early [[Miocene]] bird from [[Bavaria]] which has been identified as an extinct representative of the climbing Certhioidea, a [[clade]] comprising the treecreepers, wallcreeper and nuthatches. It has been described as ''Certhiops rummeli''.<ref name="Manegold">{{cite journal| last= Manegold | first= Albrecht  |date=April 2008| title= Earliest fossil record of the Certhioidea (treecreepers and allies) from the early Miocene of Germany | journal= Journal of Ornithology | volume=149 | issue= 2 | pages= 223–228  | doi = 10.1007/s10336-007-0263-9| s2cid= 11900733 }}</ref>
{{Phylogeny/Certhioidea}}
The genus name is derived from [[Ancient Greek]] ''kerthios'', a small tree-dwelling bird described by [[Aristotle]] and others.<ref name = BTO>{{cite web|title= Treecreeper ''Certhia familiaris'' [Linnaeus, 1758] |work=BirdFacts  |url= http://blx1.bto.org/birdfacts/results/bob14860.htm  |publisher= [[British Trust for Ornithology]] (BTO) |access-date=2008-05-20}}</ref>

There are two other small bird families with ''treecreeper'' or ''creeper'' in their name, which are not closely related:
* the [[Australian treecreeper]]s (Climacteridae)
* the [[Philippine creeper]]s (Rhabdornithidae)

The [[wallcreeper]] was originally described in the family Certhiidae but is now considered as more closely related to the [[nuthatches]]. The [[woodcreeper]]s (subfamily Dendrocolaptinae) also have a similar name.

===Species in taxonomic order===
* '''Genus ''[[Certhia]]'''''
**[[Eurasian treecreeper]] or '''common treecreeper''', ''Certhia familiaris''
**[[Hodgson's treecreeper]], ''Certhia hodgsoni''
**[[Brown creeper]], ''Certhia americana''
**[[Short-toed treecreeper]], ''Certhia brachydactyla''
**[[Bar-tailed treecreeper]] or '''Himalayan treecreeper''', ''Certhia himalayana''
**[[Sichuan treecreeper]], ''Certhia tianquanensis''
**[[Rusty-flanked treecreeper]] or '''Nepal treecreeper''', ''Certhia nipalensis''
**[[Sikkim treecreeper]] or '''brown-throated treecreeper''', ''Certhia discolor''
**[[Hume's treecreeper]], ''Certhia manipurensis''
An extinct treecreeper, ''[[Certhia rummeli]]'', was described from a fossilized right [[tarsometatarsus]] found in karstic fissure fillings in Petersbuch, [[Bavaria]] by German paleornithologist [[Albrecht Manegold]]. This specimen implies the branching of Certhioidea occurred 20 MYA, and represents the oldest fossil passerine assignable to an extant [[Clade|subordinated clade]] of [[Songbird|oscines]] in the Northern Hemisphere.<ref>{{Cite journal|last=Manegold|first=Albrecht|date=2008|title=Earliest fossil record of the Certhioidea (treecreepers and allies) from the early Miocene of Germany|url=http://link.springer.com/10.1007/s10336-007-0263-9|journal=Journal of Ornithology|language=en|volume=149|issue=2|pages=223–228|doi=10.1007/s10336-007-0263-9|s2cid=11900733 |issn=2193-7192|url-access=subscription}}</ref>