I am interested in the behavioural and evolutionary ecology of birds. I am particularly fascinated by inter- and intra-specific brood parasite-host interactions in the common cuckoo and the barn swallow study system. I video-record parasitism in situ at host nests and follow individuals by using RFID tags and readers. For studying the impact of visual signals (e.g. mimetic eggs of brood parasites) to host behaviour (e.g. egg recognition), I use up-to-date methods that simulate avian visual perception of colours and patterns. These include e.g. spectrometry, UV photography and modelling of avian vision.