Darwin's theory of sexual selection fundamentally changed how we think about sex and
evolution. The struggle over mating and fertilization is a powerful driver of diversification …

Within populations, individuals often show repeatable variation in behaviour, called 'animal
personality'. In the last few decades, numerous empirical studies have attempted to …

Animals often need to signal to attract mates and behavioural signalling may impose
substantial energetic and fitness costs to signallers. Consequently, individuals often …

Choosing to mate with an infected partner has several potential fitness costs, including
disease transmission and infection-induced reductions in fecundity and parental care. By …

Male mate choice occurs in several animal species, but we know little about the factors that
influence the expression of this behaviour. Males vary in their capacity to acquire mates (ie …

Artificial light at night (ALAN) has rapidly and drastically changed the global nocturnal
environment. Evidence for the effect of ALAN on animal behaviour is mounting and animals …

Animals compete in contests over limited resources. Contestants forfeit once they ascertain
that their opponent has greater resource‐holding potential (RHP; mutual assessment) or …

Dietary partitioning plays a central role in biological communities, yet the extent of
partitioning often varies dramatically over time. Food availability may drive temporal …

Nutrition is a limiting feature of species evolution. The differences in nutritional requirements
are the evolutionary result of differential adaptations to environmental changes, explaining …

Predation plays a role in preventing the evolution of ever more complicated sexual displays,
because such displays often increase an individual's predation risk. Sexual selection theory …