CURRENT PROJECTS / 2007

R. H. WILEY AND COLLEAGUES

	Application of Signal Detection Theory to the evolution of signals in animal communication This projects uses both theory and experimentation to explain the evolution of animals signals in relation to limitations on signal detection by receivers. Variation in vocalizations of Amazonian birds in relation to territorial cooperation and speciation The goal of this project is to understand the evolution of variation in vocal signals within and among populations in an area of high species diversity. Signal recognition in dense aggregations of seabirds and frogs This project examines communication of species and individual identity in dense aggregations, such as colonies of seabirds or choruses of frogs, where receivers must recognize signals in intense similar noise. Variation in time and space in avian populations This project employs novel census techniques to examine variation in avian populations at nested scales in time and space. Customized computer programs for the analysis and synthesis of animal signals This ongoing project develops programs for customized spectral analysis of acoustic signals and for synthesis of complex signals such as those used by birds and frogs.