Bird extinction

Bird extinction is the complete elimination of all species members under the taxonomic class, Aves. Out of all known bird species, (approximately 11,154), 159 (1.4%) have become extinct, with 226 (2%) being critically endangered.^[1] There is a general consensus among ornithologists that if anthropogenic activities continue as current trends suggest, one-third of all bird species, and an even greater proportion of bird populations, will be rendered extinct by the end of the 21st century.^[2]

For critically endangered species, scientists estimate they will face extinction in a few decades without proper conservation efforts; for some of these species, the current presence of extant populations is uncertain.^[3]

^ Loehle, Craig; Eschenbach, Willis (January 2012). "Historical bird and terrestrial mammal extinction rates and causes". Diversity and Distributions. 18 (1): 84–91. Bibcode:2012DivDi..18...84L. doi:10.1111/j.1472-4642.2011.00856.x. ISSN 1366-9516. S2CID 55510056.
^ Ceballos, Gerardo; Ehrlich, Anne; Ehrlich, Paul R. (2015). The annihilation of nature: human extinction of birds and mammals. Baltimore: Johns Hopkins university press. ISBN 978-1-4214-1718-9.
^ Pimm, Stuart; Raven, Peter; Peterson, Alan; Şekercioğlu, Çağan H.; Ehrlich, Paul R. (2006-07-18). "Human impacts on the rates of recent, present, and future bird extinctions". Proceedings of the National Academy of Sciences. 103 (29): 10941–10946. doi:10.1073/pnas.0604181103. ISSN 0027-8424. PMC 1544153. PMID 16829570.

[1] Loehle, Craig; Eschenbach, Willis (January 2012). "Historical bird and terrestrial mammal extinction rates and causes". Diversity and Distributions. 18 (1): 84–91. Bibcode:2012DivDi..18...84L. doi:10.1111/j.1472-4642.2011.00856.x. ISSN 1366-9516. S2CID 55510056.

[2] Ceballos, Gerardo; Ehrlich, Anne; Ehrlich, Paul R. (2015). The annihilation of nature: human extinction of birds and mammals. Baltimore: Johns Hopkins university press. ISBN 978-1-4214-1718-9.

[3] Pimm, Stuart; Raven, Peter; Peterson, Alan; Şekercioğlu, Çağan H.; Ehrlich, Paul R. (2006-07-18). "Human impacts on the rates of recent, present, and future bird extinctions". Proceedings of the National Academy of Sciences. 103 (29): 10941–10946. doi:10.1073/pnas.0604181103. ISSN 0027-8424. PMC 1544153. PMID 16829570.

[1]

[2]

[3]