Walk near woods or water on any spring or summer night and you will hear a bewildering
(and sometimes deafening) chorus of frog, toad, and insect calls. How are these calls …

Recent theoretical and empirical studies confirm that male mate choice and/or female–
female mate competition can be expressed in the absence of sex-role reversal. Such …

A small but taxonomically diverse number of vertebrates have a left-eye preference for
aggression, but this has been shown only in males. Here we present data consistent with a …

The expression in females of ornaments thought to be the target of sexual selection in males
is a long‐standing puzzle. Two main hypotheses are proposed to account for the existence …

We describe discrete variation in throat color, an important sexual signal, in males of 2
populations of the mesquite lizard (Sceloporus grammicus). At one locality, males exhibit …

Color polymorphic sexual signals are often associated with alternative reproductive
behaviors within populations, and the number, frequency, or type of morphs present often …

Long-term signal evolution is shaped by a variety of selective pressures including the need
to convey additional information or to improve message transfer to specific receivers or …

Female choice can powerfully influence the evolution of male phenotypes. In territorial
species, it is challenging to determine the targets of female choice because male traits (eg …

Lizards have communicative displays involving primarily vision and chemicals, and recent
work suggests trade-offs between these two modalities. In reptiles, little work assesses …

Color is used in social signaling by many species. Male Eastern Fence Lizards, Sceloporus
undulatus, possess sex-specific dorsal and ventral coloration, including vivid blue badges …