Juanra has worked with transgenic (optogenetic) Fruit flies in order to experimentally test a number of ecological and evolutionary predictions regarding Matching Habitat Choice.  You can read more about his project here. He has also developed a simulation project to investigate when matching habitat choice might evolve, and when alternative mechanisms that help organisms to cope with environmental variability (like phenotypic plasticity or population genetic divergence) are favoured instead, or at the same time. (Funded by a four-year grant, Spanish Ministry of Economy and Competitiveness).