Electronic Supplementary Material 3. List of the bird species mimicked by 204 Crested and Thekla lark individuals from the Ebro Valley. C = model species with complex vocalization, S = model species with simple vocalizations.
*Song complexity was established on the basis of published literature on song type repertoire and syllable repertoire (Garamszegi et al. 2007; Podos & Warren 2007; BWPi 2006). Species singing at least two song types (or diverse strophes), and each including at least five diverse syllables types were classified as C, those birds singing one song type with <5 diverse syllables were classified as S.
BWPi 2.01. 2006. Birds of the Western Palearctic interactive 2.01. BirdGuide Ldt.
Garamszegi, L. Z., Eens M., Pavlova D.Z., Aviles J.M., & A.P. Møller. 2007. A comparative study of the function of heterospecific vocal mimicry in European passerines. Behav. Ecol.18, 1001-1009.
Podos, J. & Warren, P.S. 2007. The evolution of geographic variation bird song. Advances in the study of behaviour 37, 403-458.5>