This informative book details the important effects sexual selection has on barn swallow mating behavior, mating competition, parental care, host-parasite interactions, and migration strategies. The first two chapters present a concise, insightful review of the two main components of sexual selection theory--male-male competition and female choice. Citing evidence from the author's long-term field work on the monogamous barn swallow, subsequent chapters investigate the advantages held by males with colorful plumage and by females who are choosy when selecting a mating partner. In his...

Why does nature love symmetry? In this up-to-date review of symmetry and its evolutionary implications, Anders Moller and John Swaddle argue that symmetry is related to genetic stability and fitness and that symmetric individuals appear to have quantifiable and significant advantages over their asymmetric counterparts. In contrast, asymmetry, a common measure of developmental instability, is the result of environmental or genetic disruptions of developmental processes, such as pollutants, competition, parasitism, inbreeding, genetic mutation, and hybridization. Moller and Swaddle maintain...