Aposematic theory has historically predicted that predators should select for warning signals
to converge on a single form, as a result of frequency‐dependent learning. However …

Growing evidence suggests that anthropogenic noise has deleterious effects on the
behavior and physiology of free-living animals. These effects may be particularly …

Though well studied in males, little is known about the factors influencing variation in
expression of exaggerated traits such as intense aggression, elaborate ornaments, and …

Rapid urbanization is a global phenomenon that is increasingly exposing organisms to
novel stressors. These novel stressors can affect diverse aspects of organismal function …

The sexual ornamentation of animals typically consists of multiple distinct traits. The
classical research approach focuses on differences among these traits, but this approach …

Color ornamentation is often sexually selected as a signal of condition, which may be
affected by the environment and senescence, but long-term studies in mutually ornamented …

The adrenocortical stress response may divert energy away from sexual ornamentation,
such that ornaments signal exposure or resistance to physiological stress. Alternatively …

The past decades have provided valuable information on how animals age in the wild.
However, examples of male reproductive senescence are scarce. In particular, few studies …

A fundamental assumption of theories on the evolution of sexual signals is that they should
be costly to produce in order to honestly signal the quality of the sender. The expression of …

The presence of multiple distinct ornamental traits in the same species is frequently
explained by context-specificity and different information content. However, the expression …