Fundamental concepts about the diversity and evolution of signals have been developed
mainly in the context of sexual selection. Here, we review the functional ecology of signals in …

Extra-pair paternity in birds: review of the genetic benefits Page 1 Extra-pair paternity in birds:
review of the genetic benefits Erol Akçay* and Joan Roughgarden Department of Biological …

Sexual selection theory predicts that signals reflecting the relative quality of individuals
should be used in mate choice. Females could base their choice of copulation partners on …

In comparison with most animal behaviours, circadian rhythms have a well‐characterized
molecular genetic basis. Detailed studies of circadian clock genes in 'model'organisms …

Timing is essential in seasonally changing habitats. Survival and reproduction are
enhanced through precise adjustment to environmental conditions. Avian seasonal …

Gaudy plumage coloration is a widespread ornamental trait in birds and thought to be
sexually selected. Although much attention has been devoted to structural coloration …

Some authors have argued that human preferences for “beautiful” birds may skew the
selection of species used to promote conservation programs. This evokes questions about …

It is poorly understood whether female morphological and behavioural traits can be used as
'signals'. In particular, experimental tests of the hypothesis that female ornaments reflect …

Several animal species have been shown to use phenotypic traits to assess the competitive
ability of opponents and adjust their aggressiveness depending on the likelihood to win the …

Copulations outside the pair bond are common among socially monogamous birds, but
males differ in their extrapair siring success. A large body of research has focused on the …