Main research interests Perception and cognition, especially in the domestic hen. Personality traits in the domestic dog. Learning and exploration in optimal foraging situations. Especially how animals weigh the longterm value of information against the immediate value of food.
Domestic hens have declarative representations.
In vivo simulation of signal evolution. Rearing without early access to perches impairs the spatial skills of laying hens. Hens use occlusion to judge depth in a two-dimensional picture. Spontaneous alternation behaviour in the domestic fowl.