Deimatic behaviours, also referred to as startle behaviours, are used against predators and
rivals. Although many are spectacular, their proximate and ultimate causes remain unclear …

Social interactions are ubiquitous across the animal kingdom. A variety of ecological and
evolutionary processes are dependent on social interactions, such as movement, disease …

Though it has long been known that animal communication is complex, recent years have
seen growing interest in understanding the extent to which animals give multicomponent …

Why animal communication displays are so complex and how they have evolved are active
foci of research with a long and rich history. Progress towards an evolutionary analysis of …

Highlights•Low voice pitch conveys impressions related to social power.•We consider why
sex differences in voice pitch evolved in humans and other primates.•Evidence suggests that …

Aquatic animals use and produce sound for critical life functions, including reproduction.
Anthropogenic noise is recognized as a global source of environmental pollution and …

Courtship displays are behaviours aimed to facilitate attraction and mating with the opposite
sex and are very common across the animal kingdom. Most courtship displays are …

Mathematical models have played an important role in the development of sexual selection
theory. These models come in different flavors and they differ in their assumptions, often in a …

Speciation by divergent natural selection is well supported. However, the role of sexual
selection in speciation is less well understood due to disagreement about whether sexual …

Similar to the nonverbal signals shown by many nonhuman animals during aggressive
conflicts, humans display a broad range of behavioral signals to advertise and augment their …