Since 2010, Dr Nielsen has worked at the National Institute of Agricultural Research (INRA) in France as member of a neurobiology unit specializing in olfaction. As an ethologist, she studies the behavioural responses of rats to different smells, with emphasis on biologically relevant odours, such as those associated with sex or with predators. The aim of the research is to link the odour-based behaviour of rodents to the neurological responses observed with the same odours. Dr Nielsen has previously been in charge of the research unit for Behaviour and Stress Biology at Aarhus University, Denmark, where she worked for 12 years, mainly on poultry behaviour. Before that, spending 8 years in Edinburgh, Scotland, completing a PhD on pig feeding behaviour and working as a post doc on metabolic stress in dairy cows. She has in-depth experience in experimental behaviour science on rats, growing pigs, dairy cows, broiler chickens and broiler breeders, and has been actively involved in work