Abstract is: The swifts are a family, Apodidae, of highly aerial birds. They are superficially similar to swallows, but are not closely related to any passerine species. Swifts are placed in the order Apodiformes with hummingbirds. The treeswifts are closely related to the true swifts, but form a separate family, the Hemiprocnidae. Resemblances between swifts and swallows are due to convergent evolution, reflecting similar life styles based on catching insects in flight. The family name, Apodidae, is derived from the Greek ἄπους (ápous), meaning "footless", a reference to the small, weak legs of these most aerial of birds. The tradition of depicting swifts without feet continued into the Middle Ages, as seen in the heraldic martlet.
| taxon | Q16521 |
| P4024 | ADW taxon ID | Apodidae |
| P6039 | Australian Faunal Directory ID | Apodidae |
| P1617 | BBC Things ID | 5aa82f21-1356-4aa7-a982-6d4f8f13230b |
| P7202 | Belgian Species List ID | 58120 |
| P838 | BioLib taxon ID | 8780 |
| P3606 | BOLD Systems taxon ID | 1470 |
| P5395 | Canadian Encyclopedia article ID | swift |
| swift | ||
| P10585 | Catalogue of Life ID | 6L5 |
| P935 | Commons gallery | Apodidae |
| P1036 | Dewey Decimal Classification | 598.762 |
| P1939 | Dyntaxa ID | 2002093 |
| P4746 | Elhuyar ZTH ID | 020565 |
| P830 | Encyclopedia of Life ID | 8023 |
| P1417 | Encyclopædia Britannica Online ID | animal/swift-bird |
| P3031 | EPPO Code | 1APODF |
| P6262 | Fandom article ID | animals:Apodidae |
| P1895 | Fauna Europaea ID | 10816 |
| P4807 | Fauna Europaea New ID | ad2eeac1-2787-47eb-903e-54e32556f546 |
| P12589 | Featherbase ID | family/apodidae |
| P842 | Fossilworks taxon ID | 103997 |
| 39423 | ||
| P646 | Freebase ID | /m/01g0tc |
| P846 | GBIF taxon ID | 2993 |
| P227 | GND ID | 4180691-8 |
| P12385 | Gran Enciclopèdia Catalana ID | apodids |
| P1296 | Gran Enciclopèdia Catalana ID (former scheme) | 0079654 |
| P2924 | Great Russian Encyclopedia Online ID (old version) | 4168972 |
| P3151 | iNaturalist taxon ID | 6544 |
| P815 | ITIS TSN | 177995 |
| P3827 | JSTOR topic ID (archived) | swifts |
| P9495 | National Historical Museums of Sweden ID | taxon/DECB688D-B53E-409D-96AA-3E911B4CB526 |
| P8189 | National Library of Israel J9U ID | 987007553545205171 |
| P8707 | NBIC taxon ID | 3537 |
| P3240 | NBN System Key | NBNSYS0000159402 |
| P685 | NCBI taxonomy ID | 8893 |
| P3405 | Nederlands Soortenregister ID | 139180 |
| P2752 | New Zealand Organisms Register ID | 1c712bec-8d68-4793-9acb-bbb23bfe1b15 |
| P691 | NL CR AUT ID | ph125221 |
| P9157 | Open Tree of Life ID | 609796 |
| P10907 | Paleobiology Database taxon ID | 39423 |
| P4342 | Store norske leksikon ID | seilere |
| P4527 | UK Parliament thesaurus ID | 519165 |
| P4664 | Wiki Aves bird ID | apodidae |
| P850 | WoRMS-ID for taxa | 196042 |
| P2347 | YSO ID | 21838 |
| P944 | code of nomenclature | International Code of Zoological Nomenclature | Q13011 |
| P5008 | on focus list of Wikimedia project | Wikipedia:Vital articles/Level/4 | Q6173448 |
| P171 | parent taxon | Apodiformes | Q25950 |
| P1843 | taxon common name | seilerfamilien | |
| P225 | taxon name | Apodidae | |
| P9714 | taxon range | Brazil | Q155 |
| P105 | taxon rank | family | Q35409 |
| P910 | topic's main category | Category:Apodidae | Q8257266 |
| uri / http://www.wikidata.org/entity/L499874-S2 | L499874-S2 |
| uri / http://www.wikidata.org/entity/L651811-S1 | L651811-S1 |
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| P12589 | Featherbase ID | Wikidata property example | P1855 |
| Q22106522 | Charles T. Collins | interested in | P2650 |
| Q8257266 | Category:Apodidae | category's main topic | P301 |