Burung nya siti raban vertebrat bedarah angat ti nyadi kelas Aves (/ˈeɪviːz/), ditanda enggau bulu, paruh ti nadai gigi, telu ti bekulit keras, tikas metabolisme ti tinggi, ati ti bisi empat bilik, sereta rangka ti tegap tang ringan. Burung idup ba serata dunya lalu pemesai iya ari burung hummingbird lebah 5.5 cm (2.2 in) ngagai burung unta biasa 2.8 m (9 kaki 2 in). Bisi lebih 11,000 bansa burung idup, lebih setengah ari sida nya burung passerine, tauka burung "perching". Burung bisi sayap ti pemansang iya bebida nitihka bansa; semina raban ti dikelala nadai sayap iya nya burung moa enggau burung gajah ti udah punas.
| Burung Temporal range:
Possible Early Cretaceous or early Late Cretaceous origin based on molecular clock[3][4][5] | |
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Klasifikasyen saintifik 
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| Missing taxonomy template (fix): | Theropoda/skip |
| : | [[Template:Wp/iba/Taxonomy/Ornithurae/skip]] |
| Class: | Aves Linnaeus, 1758[6] |
| Extant clades | |
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| Sinonim | |
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Penerang
- ↑ Field, Daniel J.; Benito, Juan; Chen, Albert; Jagt, John W. M.; Ksepka, Daniel T. (March 2020). "Late Cretaceous neornithine from Europe illuminates the origins of crown birds". Nature. 579 (7799): 397–401. Bibcode:2020Natur.579..397F. doi:10.1038/s41586-020-2096-0. ISSN 0028-0836. PMID 32188952. S2CID 212937591.
- ↑ De Pietri, Vanesa L.; Scofield, R. Paul; Zelenkov, Nikita; Boles, Walter E.; Worthy, Trevor H. (February 2016). "The unexpected survival of an ancient lineage of anseriform birds into the Neogene of Australia: the youngest record of Presbyornithidae". Royal Society Open Science. 3 (2): 150635. Bibcode:2016RSOS....350635D. doi:10.1098/rsos.150635. PMC 4785986. PMID 26998335.
- ↑ Yonezawa, T.; et al. (2017). "Phylogenomics and Morphology of Extinct Paleognaths Reveal the Origin and Evolution of the Ratites". Current Biology. 27 (1): 68–77. Bibcode:2017CBio...27...68Y. doi:10.1016/j.cub.2016.10.029. PMID 27989673.
- ↑ Kuhl, H.; Frankl-Vilches, C.; Bakker, A.; Mayr, G.; Nikolaus, G.; Boerno, S. T.; Klages, S.; Timmermann, B.; Gahr, M. (2020). "An unbiased molecular approach using 3'UTRs resolves the avian family-level tree of life". Molecular Biology and Evolution. 38 (1): 108–127. doi:10.1093/molbev/msaa191. hdl:21.11116/0000-0007-B72A-C. PMC 7783168. PMID 32781465.
- ↑ Crouch, N. M. A. (2022). "Interpreting the fossil record and the origination of birds". bioRxiv. doi:10.1101/2022.05.19.492716. S2CID 249047881.
- ↑ Brands, Sheila (14 August 2008). "Systema Naturae 2000 / Classification, Class Aves". Project: The Taxonomicon. Diambi 11 June 2012.