Drent, P. J., Dingemanse, N. J., & van Oers, C. H. J. (2002). Functional significance
and heritability in coping strategies in a wild territorial passerine: The great tit. In C. Mettke-Hofmann, & U. Gansloßer
(Eds.), Bird research and breeding (pp. 25-46).
Fürth: Filander Verlag.