Tobias, Joseph ASheard, CatherinePigot, Alex LYang, JingyiSayol, FerranAlioravainen, NicoBarber, Robert AWalkden, Patrick AMacGregor, Hannah E AJones, Samuel E IVincent, ClaireMarples, Nicola MClaramunt, SantiagoDarski, BiancaBregman, Tom PHughes, Emma CCapp, Elliot J RVarley, Zoë KFriedman, Nicholas RKorntheuer, HeikoTrisos, Christopher HWeeks, Brian CHanz, Dagmar MTöpfer, TillRemeš, VladimírNowak, LarissaMatysioková, BeataDaly, Benjamin GSorensen, Marjorie CFord, Michael AKelly, David JAnnorbah, Nathaniel N DMcEntee, Jay PJamie, Gabriel AZyskowski, KristofCrates, RossHosner, Peter AStiles, F GaryChibesa, MosesMashao, MmatjieMlamba, EdsonPäckert, MartinDerryberry, Elizabeth PUrriza, Rolly CBrzeski, Kristin EPrawiradilaga, Dewi MRayner, Matt JBowie, Rauri C KLafontaine, René-MarieScofield, R PaulSomarathna, LankaniLepage, DenisIllif, MarshallNeuschulz, Eike LenaTemplin, MathiasDehling, D MatthiasPauwels, Olivier S GAnaluddin, KangkusoFjeldså, JonSeddon, NathalieSweet, Paul RNaka, Luciano NAleixo, AlexandreBöhning-Gaese, KatrinRahbek, CarstenThomas, Gavin HSchleuning, MatthiasDevenish, Adam J. M.Neate-Clegg, Montague H. C.Weeks, Thomas L.Phillips , Anna G.Montaño-Centellas, Flavia A.Leandro-Silva , VictorFreeman, Benjamin G.Cooney, Christopher R.Corrales-Vargas, AndreaBravo, Gustavo A.Carneiro , Lincoln S.Moncada R., Amilkar J.Baldassarre , Daniel T.Martínez-Salinas, AlejandraWolfe, Jared D.Chapman, Philip M.Neu, AlexanderMayhew, Rebekah J.Silveira , Luis FabioPollock, Henry S.Grabowska-Zhang, Ada M.Gonzalez, Juan Carlos T.Meneses, Camila G.Muñoz, Marcia C.Powell, Luke L.Matthews, Thomas J.Johnson, OscarBrito, Guilherme R. R.Harvey, Michael G.Zevallos , Maura JuradoBradfer-Lawrence , TomBradfer-Lawrence , TomMaley, James M.Lima, Hevana S.Provost, Kaiya L.Howard, Jeffrey T.Chua, Marcus A. H.Gómez , M. IsabelLi, BichengGarcía, Natalia C.Fuchs, JérômeAli, Jarome R.Carlson, Monica L.Miller, Eliot T.Lou, YingqiangDeClerck, Fabrice A. J.Cooper, Jacob C.Brawn, Jeffrey D.Fritz, Susanne A.2023-10-272023-10-272022-03-01Tobias, J A, Sheard, C, Pigot, A L, Yang, J, Sayol, F, Alioravainen, N, Barber, R A, Walkden, P A, MacGregor, H E A, Jones, S E I, Vincent, C, Marples, N M, Claramunt, S, Darski, B, Bregman, T P, Hughes, E C, Capp, E J R, Varley, Z K, Friedman, N R, Korntheuer, H, Trisos, C H, Weeks, B C, Hanz, D M, Töpfer, T, Remeš, V, Nowak, L, Matysioková, B, Daly, B G, Sorensen, M C, Ford, M A, Kelly, D J, Annorbah, N N D, McEntee, J P, Jamie, G A, Zyskowski, K, Crates, R, Hosner, P A, Stiles, F G, Chibesa, M, Mashao, M, Mlamba, E, Päckert, M, Derryberry, E P, Urriza, R C, Brzeski, K E, Prawiradilaga, D M, Rayner, M J, Bowie, R C K, Lafontaine, R-M, Scofield, R P, Somarathna, L, Lepage, D, Illif, M, Neuschulz, E L, Templin, M, Dehling, D M, Pauwels, O S G, Analuddin, K, Fjeldså, J, Seddon, N, Sweet, P R, Naka, L N, Aleixo, A, Böhning-Gaese, K, Rahbek, C, Thomas, G H, Schleuning, M, Devenish, A J M, Neate-Clegg, M H C, Weeks, T L, Phillips , A G, Montaño-Centellas, F A, Leandro-Silva , V, Freeman, B G, Cooney, C R, Corrales-Vargas, A, Bravo, G A, Carneiro , L S, Moncada R., A J, Baldassarre , D T, Martínez-Salinas, A, Wolfe, J D, Chapman, P M, Neu, A, Mayhew, R J, Silveira , L F, Pollock, H S, Grabowska-Zhang, A M, Gonzalez, J C T, Meneses, C G, Muñoz, M C, Powell, L L, Matthews, T J, Johnson, O, Brito, G R R, Harvey, M G, Zevallos , M J, Bradfer-Lawrence , T, Bradfer-Lawrence , T, Maley, J M, Lima, H S, Provost, K L, Howard, J T, Chua, M A H, Gómez , M I, Li, B, García, N C, Fuchs, J, Ali, J R, Carlson, M L, Miller, E T, Lou, Y, DeClerck, F A J, Cooper, J C, Brawn, J D & Fritz, S A 2022, 'Avonet : morphological, ecological and geographical data for all birds', Ecology Letters, vol. 25, no. 3, pp. 581-597. https://doi.org/10.1111/ele.138981461-023XORCID: /0000-0002-8259-1275/work/145600976https://hdl.handle.net/2164/22048We thank the Natural History Museum, Tring, UK, the American Museum of Natural History, USA, and 76 other research collections for providing access to specimens. Illustrations are reproduced with permission of Lynx Edicions/Cornell Lab of Ornithology. Financial support was received from numerous sources, with extensive support from Natural Environment Research Council grants NE/I028068/1, NE/P004512/1 and UKRI Global Challenges Research Fund grant ES/P011306/1 (JAT). All major sources of funding are listed in Supplementary Material, along with a complete list of institutions and individuals that contributed to data collection, logistics and specimen access.172851575engavian traitscontinuous variablesdata integrationecomorphologyfunctional diversitymacroecologymacroevolutiontrait-based ecologyQH301 BiologyQL ZoologyNatural Environment Research Council (NERC)NE/I028068/1NE/P004512/1UK Research and Innovation (UKRI)ES/P011306/1Supplementary DataQH301QLJournal article10.1111/ele.13898253