The focus of Prof. Wossler's work is mainly on animal communication, in particular the evolution of animal signals, whether they are olfactory, acoustic or visual. One aspect of the research is the analysis and identification of the signalling systems used by social insects in maintaining colony co-ordination and functioning which is integral to untangling the evolution of sociality in the animal kingdom. Another focus is on various communication strategies used by birds and mammals in relation to mimicry, mate choice, mate guarding, territoriality and helping behaviour.