S3.Topology and references of the composite phylogenies used in the analyses

(a)Non-passerines

(b)Passerines according to Sibley and Ahlquist (1990)

(c)Passerines according to Barker et al. (2004)

(d) Sources of phylogenetic information used in the study

Arbogast BS, DrovetskiSV, CurryRL, BoagPT, SeutinG, GrantPR, GrantBR, AndersonDJ(2006) The origin and diversification of Galapagos mockingbirds. Evolution 60:370–382

Arnaiz-Villena A, GuillénJ, Ruiz-del-ValleV, LowyE, ZamoraJ, VarelaP, Stefani D,AllendeLM(2001) Phylogeography of crossbills, bullfinches, grosbeaks, and rosefinches. Cell Mol Life Sci 58:1159–1166

Barker FK, CiboisA, SchiklerP, FeinsteinJ, Cracraft J (2004) Phylogeny and diversification of the largest avian radiation. Proc Natl Acad Sci USA 101:11040–11045

de Kort SR, Clayton NS (2006) An evolutionary perspective on caching by corvids. Proc R Soc Lond B 273:417–423

DimcheffDE,DrovetskiSV,Mindell DP (2002)Phylogeny of Tetraoninae and other galliform birds using mitochondrial 12S and ND2 genes.Mol Phylogenet Evol 24:203–215

Donne-Goussée C, LaudetV, Hänni C (2002) A molecular phylogeny of anseriformes based on mitochondrial DNA analysis. Mol Phylogenet Evol 23:339–356

FriesenVL, AndersonDJ,SteevesTE,JonesH, SchreiberEA (2002)Molecular support for species status of the nazca booby (Sula granti).Auk 119:820–826

Irestedt M, FjeldsåJ, NylanderJAA, Ericson PGP (2004) Phylogenetic relationships of typical antbirds (Thamnophilidae) and test of incongruence based on Bayes factors. BMC Evol Biol 4:23

James HF (2004)The osteology and phylogeny of the Hawaiian finch radiation (Fringillidae: Drepanidini), including extinct taxa.Zool J Linn Soc 141:207–255

Kimball RT, BraunEL, ZwartjesPW, CroweTM, Ligon JD (1999)A molecular phylogeny of the pheasants and partridges suggests that these lineages are not monophyletic.Mol Phylogenet Evol 11:38–54

Klicka J,JohnsonKP,LanyonSM (2000)New world nine-primaried oscine relationships: constructing a mitochondrial DNA framework.Auk117:321–336

Klicka J, VoelkerG, Spellman GM (2005) A molecular phylogenetic analysis of the "true thrushes" (Aves: Turdinae).Mol Phylogenet Evol 34:486–500

Møller AP, ChristeP, Garamszegi LZ (2005) Coevolutionary arms races: increased host immune defense promotes specialization by avian fleas. J Evol Biol 18:46-59

Nunn GB, CooperJ, JouventinP, RobertsonCJR, Robertson GG (1996)Evolutionary relationships among extant albatrosses (Procellariiformes: Diomedeidae) established from complete cytochrome-b gene sequences. Auk 113:784–801

Patten MG, Fugate M (1998)Systematic relationships among the emberizid sparrows.Auk 115:412–424

Sato A, TichyH, O’hUiginC, GrantPR, GrantBR, KleinJ (2001)On the origin of Darwin’s finches.Mol Biol Evol 18:299–311

Searcy WG, YasukawaK, Lanyon S(1999)Evolution of polygyny in the ancestors of red-winged blackbirds.Auk 116:5–19

Sibley CG, Ahlquist JE (1990) Phylogeny and classification of birds: a study in molecular evolution.Yale Univ Press, New Haven, CT

Thomas GH, Wills MA,Székely T (2004) A supertree approach to shorebird phylogeny.BMC Evol Biol 4:28

Webster JD, WebsterJG (1999)Skeletons and the genera of sparrows (Emberizinae). Auk 116:1054–1074

YuriT, Mindell DP (2002)Molecular phylogenetic analysis of Fringillidae, "New World nine-primaried oscines" (Aves: Passeriformes).Mol Phylogenet Evol 23:229–243

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