Editing Swift (bird) (section)

==Taxonomy==
[[File:Dans l'ombre des dinosaures - Scaniacypselus - 02.jpg|upright|thumb|right|''Scaniacypselus'' fossil]]
Taxonomists have long classified swifts and treeswifts as relatives of the [[hummingbird]]s, a judgment corroborated by the discovery of the [[Jungornithidae]] (apparently swift-like hummingbird-relatives) and of primitive hummingbirds such as ''[[Eurotrochilus]]''. Traditional taxonomies place the hummingbird family (Trochilidae) in the same order as the swifts and treeswifts (and no other birds); the [[Sibley-Ahlquist taxonomy]] treated this group as a superorder in which the swift order was called Trochiliformes.

The taxonomy of the swifts is complicated, with genus and species boundaries widely disputed, especially amongst the [[swiftlet]]s. Analysis of behavior and vocalizations is complicated by common [[parallel evolution]], while analyses of different [[Morphology (biology)|morphological traits]] and of various [[DNA sequences]] have yielded equivocal and partly contradictory results.<ref>{{cite journal | last1 = Thomassen | first1 = Henri A. | last2 = Tex | first2 = Robert-Jan | last3 = de Bakker | first3 = Merijn A.G. | last4 = Povel | first4 = G. David E. | year = 2005 | title = Phylogenetic relationships amongst swifts and swiftlets: A multi locus approach | journal = Molecular Phylogenetics and Evolution | volume = 37 | issue = 1| pages = 264–277 | doi = 10.1016/j.ympev.2005.05.010 | pmid=16006151}}</ref>

The Apodiformes diversified during the [[Eocene]], at the end of which the extant families were present; fossil genera are known from all over temperate Europe, between today's Denmark and France, such as the primitive swift-like ''[[Scaniacypselus]]''<ref name= mayr>{{cite journal |last= Mayr |first= Gerald |year= 2003 |title= A new Eocene swift-like bird with a peculiar feathering |journal= Ibis |volume= 145 |pages= 382–391 |url= http://www.senckenberg.de/files/content/forschung/abteilung/terrzool/ornithologie/ibissegler.pdf |doi= 10.1046/j.1474-919x.2003.00168.x |issue= 3 |access-date= 2013-10-27 |archive-url= https://web.archive.org/web/20160303225052/http://www.senckenberg.de/files/content/forschung/abteilung/terrzool/ornithologie/ibissegler.pdf |archive-date= 2016-03-03 |url-status= dead }}</ref> (Early–Middle Eocene) and the more modern ''[[Procypseloides]]'' (Late Eocene/Early [[Oligocene]] – Early [[Miocene]])<!-- Geobios36:719 -->. A prehistoric genus sometimes assigned to the swifts, ''[[Primapus]]'' (Early Eocene of England), might also be a more distant ancestor.

===Species===
{{Main|List of swift species}}
There are around 100 species of swifts, normally grouped into two subfamilies and four tribes.<ref name=chantler19>Chantler & Driessens (2000) pp. 19–20</ref>

'''[[Cypseloidinae]]'''
:*Tribe Cypseloidini
'''[[Apodinae]]'''
:*Tribe Collocaliini '''– [[swiftlets]]''' 
:*Tribe Chaeturini ''' – needletails'''
:*Tribe Apodini ''' – typical swifts'''