Examination of functioning and evolution of complex structures and complex physiological processes, such as energy metabolism, in vertebrates. Emphasis is on developmental and molecular research. Functional and evolutionary explanations of complex structures in vertebrates and their transformations during ontogeny and evolution. The focus is on feeding and respiration in birds. Theoretical and empirical studies of causation, development, function, evolution and neurobiology of animal behaviour, with emphasis on learning processes and communication.
Bird vocalization is the major model system.
Theoretical Biology and Phylogenetics. Theoretical and experimental research on patterns and processes of evolutionary change, in particular speciation. The experimental research focusses on terrestrial gastropods. Theoretical Evolutionary Biology. Theory of evolutionary and ecological dynamics ranging from behaviour of individuals through evolution within species to speciation and interactions between species.