Improving the welfare of farm animals depends on our knowledge on how they perceive and
interpret their environment; the latter depends on their cognitive abilities. Hence, limited …

The most important role in the recognition and categorization of predators (as well as other
animals) is usually attributed to so-called key features. Under laboratory conditions, we …

Laying hens in loose-housing systems select a nest daily in which to lay their eggs among
many identical looking nests, they often prefer corner nests. We investigated whether …

Before accepting a configural or holistic account of visual perception, one should be sure
that an analytic (elemental) account does not provide an equal or better explanation of the …

Eight experiments were conducted to examine different aspects of hen's visual behaviour,
and to assess whether hens responded to photographs in the same way they do to the real …

abstract Improving the welfare of farm animals depends on our knowledge on how they
perceive and interpret their environment; the latter depends on their cognitive abilities …

In biorobotics, autonomous agents have successfully been applied as empirical models of
simple behavioural patterns and of the influence of morphology on adaptive behaviour. We …

The central question guiding this dissertation is:" What is it about the human mind that
permits and obliges us to interpret our experience in moral terms?" Instead of asking what …

Es wurden visuelle Diskriminationsexperimente mit Hennen von vier unterschiedlichen
Haushuhnrassen durchgeführt. Von diesen Rassen war eine, die Holländer Haubenhühner …