I am an evolutionary biologist and passionate naturalist with a particular interest in microevolution. Microevolution is focused on evolutionary change that takes place within populations and that ultimately lead to divergence between populations. I make use of quantitative genetic techniques for studying the genetic architecture of sexually selected traits and of molecular markers for localizing additive genetic variation in the genome ('QTL mapping'). Two particularly intriguing topics are the evolution of sexual ornamentation and of behavioral strategies for successful reproduction. Another special focus lies on the sources of variation in mating preferences, an important component of sexual selection. Other interests include life history evolution, inbreeding depression, condition-dependent trait expression, biostatistics and animal migration.