RT Journal Article T1 How many bird and mammal extinctions has recent conservation action prevented? A1 Bolam, Friederike A1 Mair, Louise A1 Angelico, Marco A1 Calzada Samperio, Javier AB Aichi Target 12 of the Convention on Biological Diversity (CBD) contains theaim to ‘prevent extinctions of known threatened species’. To measure the degreeto which this was achieved, we used expert elicitation to estimate the numberof bird and mammal species whose extinctions were prevented by conservationaction in 1993–2020 (the lifetime of the CBD) and 2010–2020 (the timing of AichiTarget 12). We found that conservation action prevented 21–32 bird and 7–16mammal extinctions since 1993, and 9–18 bird and two to seven mammal extinctionssince 2010. Many remain highly threatened and may still become extinct.Considering that 10 bird and five mammal species did go extinct (or are stronglysuspected to) since 1993, extinction rates would have been 2.9–4.2 times greaterwithout conservation action. While policy commitments have fostered significantconservation achievements, future biodiversity action needs to be scaled upto avert additional extinctions. PB Society for Conservation Biology SN 1755-263X YR 2020 FD 2020-09 LK http://hdl.handle.net/10272/18880 UL http://hdl.handle.net/10272/18880 LA eng NO Bolam, F. C., Mair, L., Angelico, M. ... Calzada Samperio, J. (2020). How many bird and mammal extinctions has recent conservation action prevented? Conservation Letters, e12762. DOI: https://doi.org/10.1111/conl.12762 DS Repositorio Institucional de la Universidad de Huelva RD 14 jul 2026